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LIBRARY NM Michigan State University This is to certify that the thesis entitled COW-CALF PRODUCER PREFERENCES FOR VOLUNTARY TRACEABILITY SYSTEMS AND SYSTEM ATTRIBUTES presented by Lee L. Schulz has been accepted towards fulfillment of the requirements for the degree in Agricultural Economics m MMflL ' Méjor Professor’ 5 Signature July 25, 2008 Date MSU is an affinnative-action, equal-opportunity employer PLACE IN RETURN BOX to remove this checkout from your record. TO AVOID FINES return on or before date due. MAY BE RECALLED with earlier due date if requested. DATE DUE DATE DUE DATE DUE 5/08 K:/Prolecc&Pres/ClRC/DateDue‘indd COW-CALF PRODUCER PREFERENCES FOR VOLUNTARY TRACEABILITY SYSTEMS AND SYSTEM ATTRIBUTES By Lee L. Schulz A THESIS Submitted to Michigan State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Department of Agricultural Economics 2008 ABSTRACT COW-CALF PRODUCER PREFERENCES FOR VOLUNTARY TRACEABILITY SYSTEMS AND SYSTEM ATTRIBUTES By Lee L. Schulz Substantial losses can occur if animal identification systems cannot quickly and adequately identify individual animals, the premises where they were located, and their movements throughout production and processing. This creates a need met by this study in determining how traceability systems should be designed and promoted in order to improve voluntary participation rate. This research utilized a survey of US. cow-calf producers to identify cow-calf producer preferences and perceptions regarding voluntary traceability systems and system attributes and in turn determined what type of voluntary traceability systems would receive the greatestsupport. Meeting this core objective allowed for better identification of the potential success of alternative voluntary traceability systems that could exist in the beef industry. A second tier of research questions included examinations of mandatory vs. voluntary NAIS preferences, self- revelation of current NAIS participation, and the most current concerns and important issues to cow-calf producers regarding traceability. Results have policy implications as the optimal voluntary traceability system hinges critically upon cow-calf producer perceptions of traceability systems and system attributes. Results indicate the importance of considering producers’ perceptions and preferences regarding traceability when designing traceability systems. Copyright by LEE L. SCHULZ 2008 Dedicated to my Mom and Dad iv ACKNOWLEDGEMENTS I would like to thank the Department of Agriculture, Food and Resource Economics at Michigan Stateifor providing me with many opportunities. Furthermore, I want to give a general thanks to all the faculty and students who I have interacted with who have been so helpful and supportive throughout my time at MSU. Special thanks go to my major professor, Dr. Glynn Tonsor, for his friendship and guidance. Glynn has played a crucial role in my development as a graduate student and researcher. This work would not have been possible without his contributions. 1 am truly grateful for his help and am appreciative that he has gone above and beyond to help me succeed. I would also like to thank the members of my thesis committee, Dr. Roy Black, Dr. Chris Wolf, and Dr. Dan Buskirk. They have always provided information and insights that have led to higher quality output. Furthermore, I would like to thank Joleen Hadrich and Nicole Olynk for continually answering my questions and for their help throughout my studies and research. Their experience and expertise has proven to be indispensable assets throughout my time at MSU. I cannot thank Nicole enough for her assistance in the distribution of the survey for this thesis. Joleen and Nicole have proven to be great friends and have been very influential in my success. Finally, I would like to thank my parents, Cliff and Carol, sister, Megan, and girlfriend, Kelly, for all their support and encouragement. TABLE OF CONTENTS LIST OF TABLES .......................................................................................................... VIII LIST OF FIGURES ........................................................................................................ XIII CHAPTER 1 : INTRODUCTION ....................................................................................... 1 1.1 PROBLEM STATEMENT .......................................................................................... 1 1.2 SCOPE ................................................................................................................... 3 1.3 ORGANIZATION OF THESIS .................................................................................... 5 CHAPTER 2: LITERATURE REVIEW ............................................................................ 6 2.1 TRACEABILITY SYSTEM DEFINITION ..................................................................... 6 2.1.1 Meat Traceability ............................................................................................ 8 2.1.2 Live Animal Traceability .............................................................................. 10 2.2 ECONOMICS AND CURRENT STATUS OF TRACEABILITY SYSTEMS ....................... 13 2.2.1 Economics of Traceability Systems .............................................................. 13 2.2.2 Current Status of Traceability Systems ......................................................... 16 2.3 CONSUMER IMPACTS/PREFERENCES ................................................................... 20 2.4 WORK NEEDED ................................................................................................... 23 CHAPTER 3: OBJECTIVES ............................................................................................ 25 CHAPTER 4: SURVEY AND DATA DESCRIPTION .................................................. 32 4.1 SURVEY DESIGN ................................................................................................. 32 4.2 SURVEY DATA .................................................................................................... 38 CHAPTER 5: CONCEPTUAL FRAMEWORK AND MODELS ................................... 42 5.1 FORECASTING FRAMEWORK ............................................................................... 43 5.1.1 Tobit Model .................................................................................................. 43 5.2 PROBIT MODEL SPECIFICATIONS ......................................................................... 45 5.2.1 Multinomial Probit Model ............................................................................ 45 5.2.2 Binary Probit ................................................................................................. 46 5.2.3 Endogeneity Bias .......................................................................................... 48 5.2.4 Trinomial Probit ............................................................................................ 50 5.2.5 Order Probit .................................................................................................. 50 5.3 CHOICE MODEL SPECIFICATIONS ........................................................................ 51 5.3.1 Multinomial Logit ......................................................................................... 52 5.3.2 Random Parameter Logit .............................................................................. 54 5.3.3 Latent Classification Model .......................................................................... 56 CHAPTER 6: EMPIRICAL MODELING ....................................................................... 58 6.1 TOBIT MODELS ................................................................................................... 59 6.2 PROBIT MODELS ................................................................................................. 61 6.2.1 Binary Probit ................................................................................................. 62 vi 6.2.2 Endogeneity Evaluation ................................................................................ 62 6.2.3 Trinomial Probit ............................................................................................ 62 6.2.4 Ordered Probit ............................................................................................... 64 6.3 MULTINOMIAL LOGIT MODELS ........................................................................... 65 6.4 RANDOM PARAMETER MODELS .......................................................................... 68 6.5 LATENT CLASSIFICATION MODELS ..................................................................... 69 6.6 WILLINGNESS-TO-ACCEPT ESTIMATES ............................................................... 70 6.7 WELFARE MEASURE ........................................................................................... 72 CHAPER 7: RESULTS .................................................................................................... 74 7.1 PRODUCERS’ PRACTICES AND PERCEPTIONS REGARDING TRACEABILITY ........... 74 7.1.1 Producers’ Forecast Analysis ........................................................................ 75 7.1.2 Registration in NAIS ..................................................................................... 78 7.1.3 Mandatory NAIS Beliefs .............................................................................. 80 7.1.4 Important Issues when Implementing Traceability Systems ........................ 83 7.1.5 Producer Concerns When Implementing Traceability Systems ................... 88 7.1.6 Issues in the Beef Industry when Implementing Traceability Systems ........ 95 7.2 CHOICE EXPERIMENT ANALYSIS ......................................................................... 96 7.2.1 Multinomial Logit Model ............................................................................. 96 7.2.2 Random Parameter Logit Model ................................................................. 101 7.2.3 Latent Classification Model ........................................................................ 106 7.3 PRODUCER WELFARE EFFECTS ......................................................................... 1 13 7.4 IMPLICATIONS ................................................................................................... 116 CHAPTER 8: CONCLUSIONS ..................................................................................... 136 APPENDICES ................................................................................................................ 139 APPENDIX 1: COW-CALF PRODUCER SURVEY ................................................ 140 APPENDIX 2: VARIABLES USED IN REGRESIONS AND DIAGNOSTICS ....... 146 APPENDIX 3: COW-CALF PRODUCER SURVEY DEMOGRAPHIC, PERCEPTION, AND CHOICE EXPERIMENT SUMMARY TABLES ........ 148 3.1 Demographics ............................................................................................. 148 3 .2 Perceptions .................................................................................................. l 56 3.3 Choice Experiment ...................................................................................... 162 APPENDIX 4: SUPPLEMENTAL REGRESSIONS AND DIAGNOSTICS ............ 168 APPENDIX 5: SAS, STATA, AND LIMDEP CODE ................................................ 175 5.1 SAS ............................................................................................................. 175 5.2 STATA ........................................................................................................ 194 5.3 LIMDEP ...................................................................................................... 195 REFERENCES ............................................................................................................... 198 vii LIST OF TABLES Table 7.1. Producers’ Forecasts ........................................................................................ 77 Table 7.2. NAIS Premise Registration .............................................................................. 79 Table 7.3. Producers’ Beliefs Concerning Mandatory NAIS ........................................... 81 Table 7.4. MB to Monitoring/Managing Disease ............................................................. 85 Table 7.5. MB to Maintaining Current Foreign Markets .................................................. 86 Table 7.6. ME to Accessing Foreign Markets .................................................................. 86 Table 7.7. MB to Increasing Consumer Confidence ......................................................... 87 Table 7.8. MB to Concerns Regarding System Cost ........................................................ 89 Table 7.9. MB to Concerns Regarding System Liability .................................................. 90 Table 7.10. ME to Concerns Regarding Confidentiality .................................................. 91 Table 7.11. ME to Concerns Regarding Reliability .......................................................... 92 Table 7.12. ME to Concerns Regarding Non-Participating Firms Benefiting .................. 93 Table 7.13. ME to Concerns Regarding System Failures ................................................. 94 Table 7.14. ME to Implementation of COOL ................................................................... 95 Table 7.15. Multinomial Logit Estimates ......................................................................... 97 Table 7.16. Multinomial Logit Willingness-to-Accept ..................................................... 99 Table 7.17. Random Parameter Logit Estimates ............................................................ 101 Table 7.18. Random Parameter Logit Willingness-to-Accept ........................................ 105 Table 7.19. Latent Class Model Estimates ...................................................................... 108 Table 7.20. Latent Class Model Willingness-to-Accept ................................................. 111 Table 7.21. Welfare Effects ............................................................................................ 114 Table 7.1a. Producers’ Forecasts .................................................................................... 122 viii Table 7.2a. NAIS Premise Registration Estimates ......................................................... 123 Table 7.3a. Producers’s Beliefs Concerning Mandatory NAIS Estimates ..................... 124 Table 7.4a. Monitoring/Managing Disease Estimates .................................................... 125 Table 7.5a. Maintaining Current Foreign Markets Estimates ......................................... 126 Table 7.6a. Accessing Foreign Markets Estimates ......................................................... 127 Table 7.7a. Increasing Consumer Confidence Estimates ................................................ 128 Table 7.8a. Concerns Regarding System Cost Estimates ............................................... 129 Table 7.9a. Concerns Regarding System Liability Estimates ......................................... 130 Table 7.10a. Concerns Regarding Confidentiality Estimates ......................................... 131 Table 7.11a. Concerns Regarding System Reliability Estimates .................................... 132 Table 7.12a. Concerns Regarding Free-Riding Estimates .............................................. 133 Table 7.13a. Concerns Regarding System Failures Estimates ........................................ 134 Table 7.14a. Implementation of COOL Estimates .......................................................... 135 Table A.3.1. Producers’ Gender (Survey Question 1) .................................................... 148 Table A.3.2. Producers’ Age (Survey Question 2) ......................................................... 148 Table A.3.3. Producers’ State of Residence (Survey Question 3) .................................. 148 Table A.3.4. States within the ERS Farm Production Regions ...................................... 149 Table A.3.5. ERS Farm Production Regions .................................................................. 149 Table A.3.6. States within the US. Regions ................................................................... 150 Table A.3.7. U.S. Regions .............................................................................................. 150 Table A.3.8. Farm Organizations of Membership (Survey Question 4) ......................... 150 Table A.3.9. Educational Description (Survey Question 5) ........................................... 151 Table A.3.10. Years Raising Cattle (Survey Question 6) ............................................... 152 ix Table A.3.11. Expected Future Years Raising Cattle (Survey Question 7) .................... 152 Table A.3. 12. Estimated Annual Pre-tax Household Income (Survey Question 8) ....... 152 Table A.3.13. Off-Farm Household Income (Survey Question 9) ................................. 152 Table A.3.14. Labor Supplied by Paid Employees (Survey Question 10) ..................... 153 Table A.3.15. Feed Needs Produced by Own Farm (Survey Question 11) .................... 153 Table A.3.16. Production Claims (Survey Question 12) ................................................ 153 Table A.3.17. Marketing Methods (Survey Question 13) .............................................. 154 Table A.3.18. Beef Cows that Calved (Survey Question 14) ......................................... 154 Table A.3.19. Operation’s Sales at Production Stages (Survey Question 15) ................ 154 Table A.3.20. Market Finished Cattle and Own Feedlot (Survey Question 15) ............. 154 Table A.3.21. Current Animal Identification Methods (Survey Question 16) ............... 155 Table A.3.22. Current Premise Registration in NAIS (Survey Question 22) ................. 155 Table A.3.23. Issues in Designing a Traceability System (Survey Question 17) ........... 156 Table A.3.23a. Monitoring/Managing Disease (Survey Question 17) ........................... 156 Table A.3.23b. Increasing Consumer Confidence (Survey Question 17) ....................... 156 Table A.3.23e. Enhancing Marketability (Survey Question 17) .................................... 156 Table A.3.23d. Maintaining Current Foreign Markets (Survey Question 17) ................ 157 Table A.3.23e. Accessing Foreign Markets (Survey Question 17) ................................ 157 Table A.3.23f. Improving On-F arm Management (Survey Question 17) ...................... 157 Table A.3.23 g. Managing the Supply Chain (Survey Question 17) ............................... 157 Table A.3.23b. Enhancing Food Safety (Survey Question 17) ....................................... 158 Table A.3.24. Concerns in Designing a Traceability System (Survey Question 18) ...... 158 Table A.3.24a. Cost to Participating Producer ............................................................... 158 Table A.3.24b. Confidentiality of Information ............................................................... 158 Table A.3.24c. Reliability of Technology ...................................................................... 159 Table A.3.24d. Liability to Participating Producer ......................................................... 159 Table A.3.24c. Non-Participating Firms Benefiting ....................................................... 159 Table A.3.24f. Failure of System to Meet Stated Goals ................................................. 159 Table A.3.25. Common Traceability Statements (Survey Question 19) ........................ 160 Table A.3.25a. “Is More Cost Effective for Larger Cow-Calf Operations” ................... 160 Table A.3.25b. “Results in More Liability for Cow-Calf Producers” ............................ 160 Table A.3.25c. “IS Unnecessary if COOL was Implemented Nationally” ..................... 160 Table A.3.25d. “As a Mandated System is Exaggerated” .............................................. 161 Table A.3.26. Allocation of Benefits with Traceability (Survey Question 21) .............. 161 Table A.3.27. Allocation of Costs with Traceability (Survey Question 21) ................... 161 Table A.3.28. Should NAIS be Mandatory (Survey Question 23) ................................. 161 Table A.3.29. Forecast of Premises Registered (Survey Question 24) ........................... 161 Table A.3.30. Forecast of Premises Registered and RFID Use (Survey Question 24)... 161 Table A.3.31. General Choice Experiment Statistics ..................................................... 162 Table A.3.32. Complete Choice Experiments ................................................................ 162 Table A.3.33. Traceability Scenarios Block A ............................................................... 163 Table A.3.34. Traceability Scenarios Block B ............................................................... 164 Table A.3.35. Traceability Scenarios Block C ............................................................... 165 Table A.3.36. Traceability Scenarios Block D ............................................................... 166 Table A.3.37. Traceability Scenarios Block E ................................................................ 167 Table A4 1. Managing the Supply Chain Estimates ...................................................... 168 xi Table A.4.2. ME to Managing the Supply Chain ........................................................... 168 Table A.4.3. Enhancing Food Safety Estimates ............................................................. 169 Table A.4.4. ME to Enhancing Food Safety ................................................................... 169 Table A.4.5. Improving Marketability Estimates ........................................................... 170 Table A.4.6. ME to Improving Marketability ................................................................. 170 Table A.4.7. Improving On-Farm Management Estimates ............................................. 171 Table A.4.8. ME to Improving On-Farm Management .................................................. 171 Table A.4.9. Economies of Scale Estimates ................................................................... 172 Table A.4.10. ME to Economies of Scale ....................................................................... 172 Table A.4.11. Shifts in Liability Estimates ..................................................................... 173 Table A.4.12. ME to Shifts in Liability .......................................................................... 173 Table A.4.13. Mandatory Traceability Exaggeration Estimates ..................................... 174 Table A.4.14. ME to Mandatory Traceability Exaggeration .......................................... 174 xii LIST OF FIGURES Figure 1.1. Organization of Thesis ..................................................................................... 5 Figure 4.1. US. Regions ................................................................................................... 39 Figure 5.1. Conceptual Model Progression Flow Chart ................................................... 42 xiii KEY TO SYMBOLS AND ABBREVIATIONS Abbreviation Definition AIN Individual Animal Identification Number APHIS Animal, Plant Health Inspection Service BSE Bovine Spongiforrn Encephalopathy COOL Country-of-Origin Labeling CDF Cumulative Distribution Function ERS Economic Research Service F MD Foot and Mouth Disease GAO Government Accountability Office HACCP Hazard Analysis Critical Control Points ID Identification IIA Independence of Irrelevent Alternatives IRB Institutional Review Board LCM Latent Classification Model ME Mean Marginal Effects MLE Maximum Likelihood Estimation MNL Multinomial Logit NAIS National Animal Identification System NIWP National Identification Work Plan PIN Premises Identification Number PVP Process Verified Program QSA Quality Assessment Program RF ID Radio Frequency Identification RPL Random Parameter Logit TTA Traceability, Transparency, and Enhanced Quality Assurances UCRIHS University Committee on Research Involving Human Subjects US. United States USAIP United States Animal Identification Plan USDA United States Department of Agriculture WTA Willingness-to-Accept WTP Willingness-to-Pay xiv CHAPTER 1: INTRODUCTION 1.1 Problem Statement Substantial losses can occur if animal identification systems cannot quickly and adequately identify individual animals, the premises where they were located, and their movements throughout production and processing. Recent events both domestically and internationally have identified the need for animal identification systems. One of these events was the announcement on December 23, 2003 that a cow in the US. was diagnosed with Bovine Spongiform Encephalopathy (BSE or Mad-Cow Disease). Even though consumer demand in the United States (US) for beef products remained strong in the weeks following the announcement, the US. beef industry and US. government recognized the need for a traceability system that went beyond the current US. system which was not designed to routinely track individual or groups of animals once they leave a premise. The National Identification Work Plan (N IWP) was the first official public effort in the US. to examine the possible implementation of a US. animal identification (ID) system. The NIWP was developed by a task force formed in April 2002 consisting of over thirty livestock organizations and was coordinated through the National Institute for Animal Agriculture. The working plan for the implementation of the animal ID system as suggested by the NIWP was later called the US. Animal Identification Plan (USAIP) in 2003. The USAIP called for the establishment of individual premises ID by the summer of 2004, individual animal ID by 2005, and full implementation and compliance (all covered species and their movements - both interstate and intrastate) by July 2006 (Bailey and Slade, 2004). Many of the efforts for these initial goals saw opposition and encountered many obstacles. Through this initial groundwork, the United States Department of Agriculture (USDA), Animal, Plant Health Inspection Service (APHIS) has attempted to implement a nationwide beef traceability system to help producers and animal health officials respond quickly and effectively to animal disease outbreaks (e. g., Foot and Mouth Disease-F MD, Bovine Spongiform Encephalopathy-BSE, etc.) and food recalls (e.g., ground beef due to E. coli 0157:H7). With traceability taking the forefront of supply chain issues, the reality is that traceability systems are imminent, whether voluntary as they currently are or mandatory, which have been discussed within the industry. Many of the efforts of the USAIP have evolved into the National Animal Identification System (N AIS) with the only Significant difference being that NAIS is listed as “tech neutral” in its policies relating to animal identification, meaning that NAIS eliminated radio frequency identification (RFID) as the stated standard for animal ID. The National Animal Identification System is the broadest and most comprehensive effort ever launched in the US. to enhance the ability to quickly identify and contact animal premises, promote animal identification, and develop animal movement and tracing capabilities (Schroeder et al., 2007). Initial deadlines for full implementation and compliance have elapsed with participation rates for the establishment of individual premises ID and individual animal ID below expectation. This creates a need met by this study in determining how traceability systems should be designed and promoted in order to improve voluntary participation rate. Furthermore, a national livestock ID system can be used to launch more extensive quality assurance programs. In addition to animal health management, US. and international consumers demand meat product safety assurances and they have revealed a willingness-to-pay (WTP) for meat traceability (Dickinson and Bailey, 2002; Hobbs, 2003) and for attributes that could easily be verified by traceability systems (Loureiro and Umberger, 2003). Traceability is being used as the basis of competitive product differentiation strategies by food firms seeking to assure consumers of the presence of credence attributes related to production or processing methods (Hobbs, 2006) as well as by producers who seek proactive information and quality verification throughout production. Because cow-calf producers are the first player in the beef supply chain and vary widely in scale and production practices of their operations, it is crucial to consider the demographics and perceptions of cow-calf producers when attempting to implement industry-wide programs/systems. This is especially important when attempting to implement individual animal traceability and maximize participation rates of these systems as the views of these producers will most certainly impact the success or failure of these efforts. 1.2 Scope One of the core objectives of this research was to determine preferences cow-calf producers have for alternative voluntary traceability systems and their attributes. Questions addressed include, how sensitive are producer preferences to price adjustments (premiums/discounts), what are producer preferences for the entity maintaining data, and what composition of additional advanced traceability information (e. g., age verification vs. production practice information) maximizes expected voluntary participation rates? Furthermore, how do producer demographics, perceptions, and current production/technology practices affect each of these questions and are these impacts homogeneous or heterogeneous across producers? A second tier of research questions included examinations of mandatory vs. voluntary NAIS preferences, self-revelation of current NAIS participation, and the most current concerns and important issues to cow- calf producers regarding traceability. In addition, our analysis obtained producer forecasts of expected voluntary participation rates, self-revelation of current participation, and examination of other issues to improve government and industry efforts to further increase voluntary traceability participation in the US. cow-calf industry. Various methods were employed in model specification including: multinomial Logit (MNL), random parameter Logit (RPL), and latent classification models (LCM) for examining producer preferences for traceability participation, Probit models for examining producer perceptions and current practices regarding traceability systems, and Tobit models to identify the most optimistic and pessimistic of producers regarding future voluntary participation rates. For each research question addressed, alternative model specifications were used to identify the impact of producer demographics and perceptions, while also considering producer heterogeneity. Results have policy implications as the optimal voluntary traceability system hinges critically upon cow-calf producer perceptions of traceability system attributes. Overall, this research was able to provide valuable information for future policy deliberations and may assist organizations in charge of program administration to better manage resources used in animal ID practices. 1.3 Organization of Thesis The thesis proceeds in the following manner: Chapter 2 reviews the literature drawing reference from existing traceability systems, shows how traceability has and will continue to be vital to the beef industry, and overviews methods used to analyze preferences of cow-calf producers; Chapter 3 identifies the objectives of this research; Chapter 4 gives a description of the cow-calf producer survey including the design and data obtained; Chapter 5 provides the conceptual framework and models; Chapter 6 describes the empirical modeling to be used in estimation; Chapter 7 applies the modeling techniques to the data to give results and policy implications; and Chapter 8 summarizes and concludes. Figure 1.1 is provided as a visual flow chart of the thesis. Figure 1.1. Organization of Thesis CHAPTER 1: INTRODUCTION 1) CHAPTER 2: LITERATURE REVIEW CHAPTER 4: SURVEY AND (1:: CHAPTER 3: OBJECTIVES DATA DESCRIPTION CHAPTER 5: CONCEPTUAL ,:(> CHAPTER 6: EMPIRICAL FRAMEWORK AND MODELS MODELING CHAPTER 8: CONCLUSIONS (7; CHAPTER 7: RESULTS CHAPTER 2: LITERATURE REVIEW The literature review provides information regarding traceability systems and the methods used for determining cow-calf producer preferences for voluntary traceability systems and attributes. The literature review is divided into for main sections: (1) Traceability System Definition, (2) Economics and Current Status of Traceability Systems, (3) Consumer Impacts/Preferences for Traceability, and (4) Work Needed. 2.1 Traceability System Definition There is no international agreement or a “one-type-fits-all” definition of traceability; however, past literature has provided various definitions of traceability. Bulut and Lawrence (2007) provide a collection of traceability definitions. The International Organization for Standardization (ISO 9001, 2000) defines traceability as “the ability to trace the history, application, or location of an entity by means of recorded identifications” (The Food Business Forum, 2005). Golan et al. (2004) found this definition quite broad and suggests: “record keeping systems that are designed to track the flow of product or product attributes through the production or supply chain”. According to Smyth and Phillips (2002), the supply chain literature sees traceability as “(an) information system necessary to provide history of products and services from origin to the point of sale.” Mennecke et al. (2006) define traceability as “the ability to retrieve the history, treatment, and location of the animal that a cut of meat comes from, through a recordkeeping and an audit system or registered identification program” (Bulut, and Lawrence, 2007). More specifically within the beef supply chain, full ‘gate to plate’ or ‘farm to fork’ traceability is an extensive form of beef traceability which provides the ability to follow products forward from their source animal (i.e., birth or ancestry), through growth and feeding, slaughter, processing, and distribution, to the point of sale or consumption (or backward from the consumer to the source animal) (Becker, 2007). Particularly, a two-part-system has developed in the beef and cattle industry; meat traceability and live animal traceability (Bulut and Lawrence, 2007). Linking these two systems at the stage of slaughter and processing is an ongoing challenge for the industry (Golan et al., 2004). For this two-part system it is important to define certain aspects of traceability. Bulut and Lawrence (2007) provide definitions of external traceability, internal traceability, chain traceability, forward traceability, and backward traceability. External traceability refers to traceability of product or product attributes through the successive stages of production (e.g. cow-calf producer, auction barn, feedlot, slaughter, and processing). Where as, internal traceability refers to traceability within the plant or production unit, which may be a part of Hazard Analysis Critical Control Points (HACCP) plans. External traceability may require some degree of internal traceability (Lupin, 2006). Chain traceability refers to traceability throughout the entire food chain. Backward traceability, traceback, or tracing is defined as “the ability to identify the origin of a particular unit and/or batch of product located within the supply chain by reference to records held upstream” (New Zealand Trade and Enterprise, 2006). Forward traceability, traceforward, traceup, or tracking is defined as “the ability to follow the path of a Specified unit of a product and/or batch through the supply chain as it moves between organizations toward the final point-of—sale or point-of-service” (New Zealand Trade and Enterprise, 2006). Liddell and Bailey (2001) further distinguish traceability from transparency and quality assurance notions. Transparency refers to the public availability of production information at each stage of production and quality assurances refer to practices to ensure food quality and safety, which could be intrinsic such as back fat and curing or extrinsic such as animal welfare and environmental preservation (Bulut and Lawrence 2007). 2.1.1 Meat Traceability Smith et al. (2000) define meat traceability as the ability to identify the origin of animals or meat as far back in the production sequence as necessary to ascertain ownership, identify parentage, assure safety and determine compliance in branded or source-verified beef programs. A method commonly referred to as farm-to-retail traceability is a system that maintains the identity of all cuts from the farm through the cutting and distribution system. Farm-to-retail tracability is very expensive and essentially requires new construction and extensive capital investment and data infrastructure. This type of system is very rare although many consumers think that this is the system in place for beef (Jensen and Hayes, 2006). A more common type of traceability involves traceability from the farm-to-carcass. This type of system is termed batch traceability. The life history of the animal is tracked for each carcass or primal cut, but the ability to trace the animal parts through the cutting floor is lost. Instead, the meat is cut and processed in batches. The final retail product can be traced to a particular batch in the processing plant. This type of system is relatively inexpensive, especially if the batches are large (Jensen and Hayes, 2006). For US. meat slaughter and processing plants, traceability is currently voluntary beyond the record keeping required by Federal Meat Inspection Act, Wholesome Meat Act, HACCP plans of 1996, and BSE regulations of 2004 (Bulut and Lawrence, 2007). Past literature provides definitions and descriptions of the roles and functions of meat traceability. Sanderson and Hobbs (2006) have broadly defined, five roles of traceability systems that include: (i) improve inventory and logistic management; (ii) improve management of food recalls in the event of a food safety problem; (iii) limit the broader (public) impacts of food safety and/or herd health problems; (iv) strengthen due diligence and liability incentives; and (v) create demand Side incentives, including facilitating product differentiation strategies and provide stronger economic signals to producers. Many of the roles of traceability are served by the functions in which the systems serve. Traceability serves as a reactive function, which means reduction of both the cost of a recall and damage to a reputation caused by a delayed or slow recall. Traceability also allows liability for food/product safety problems to be more easily established along the supply chain, hence, there is an incentive for firms to produce safe, high quality, food. Furthermore, information costs arising from quality verification for consumers are reduced by facilitating the labeling of credence attributes, including those related to food safety, animal welfare, environmentally-friendly production practices, etc. (Golan et al., 2003; Hobbs, 2003). Two final functions that these traceability systems perform is to provide information ex ante on quality attributes, enabling consumers with an ethical objection or food safety concerns to avoid the product and the systems may help prevent or punish false labeling (Hobbs, 2004). Hobbs (2004) notes that the key features of a traceability system depend on the attribute that drives its development and highlight the need to consider fully the nature of the information asymmetry problem before implementing a traceability system. The diversification in the roles and functions of traceability systems contribute greatly to how and why traceability systems differ. Further discussion and analysis in this thesis will be based on live animal traceability, leaving meat traceability issues for future research. 2.1.2 Live Animal Traceability Live animal traceability can be accomplished via a variety of systems; an example being NAIS which is currently scheduled to be fully implemented in 2009 (Bulut and Lawrence, 2007). The main function of these live animal traceability systems is to quickly identify agricultural premises exposed to an animal disease so that the disease can be more effectively controlled or eradicated. The USDA (2005) has set a long-term goal of 48 hour traceback. Furthermore, live animal traceability provides proactive information and quality verification, which is essentially an increase in production information available to producers throughout the supply chain. More specifically related to livestock and in this case beef cattle, traceability is a system that can identify individual animals or groups of animals, the premises where they are located, and the date of entry to each premises. Traceability systems vary greatly with some systems being deep and tracking beef and beef cuts from the retailer back to the farm, while other systems only extend back to a key point in the production process. 10 Some systems are very precise tracking product to the minute of production, exact premises produced at, and animals commingled with. Others are less precise, tracking cattle only to premises in a large geographical area. Finally, some traceability systems collect and track information on a broad range of attributes, while others collect and track only a few. There are certain differences among traceability systems and in order to understand these differences, standard characterization of these systems is helpful and assists in defining the function of a particular system. These standard characterizations may be made in terms of their breadth, depth, and precision (Golan et al., 2004). Breadth is the amount of information recorded by the traceability system and could include information such as age verification, production practice information, performance/ genetic information, health records as well as a host of additional information. Depth describes how far back or forwards the system tracks. A deeper system will enable the establishment of links among more agents further up or down the supply chain, where as a broader traceability system enables tracking of a larger variety of attributes throughout supply chains. In most cases, the depth of a system is largely determined by its breadth because once the firm or regulator has decided which attributes are worth tracking, the depth of the system is fundamentally determined (Mus, 2006). Precision reflects the ability of the system to pinpoint an attribute of interest. One example in the supply chain may be pinpointing a particular wholesale or retail cut of beef to an animal or lot of beef to a processing plant. That is, the unit of analysis used in the system and the acceptable error rate determines precision (Golan et al., 2004). ll Ever since traceability has been brought to the public eye, the concept has been confused with that Of animal ID. Animal ID is indispensable for live animal/meat traceability to work effectively, but in addition to the ID of animals, traceability often requires premises to be identified and cross-checking of data. Animal ID is critical for proving ownership and providing a means to track or trace animals; so, coupled with premise registration and data management, ID can be utilized in a traceability system. It is important to note that ID and traceability are not ends in themselves, but rather means or tools available to achieve a given objective. To the extent that it is understood that traceability is a tool, that ID is one of the aspects of traceability, and that it goes hand-in- hand with the analysis of recorded information, the various components involved can be successfully implemented (Ammendrup and Barcos, 2006). Traceability systems allow producers and animal health officials to respond more quickly and effectively to animal disease outbreaks, provide the basis for certifications, and provide valuable production information for producers and consumers. Because no single recipe can be provided for traceability, responsibility and design typically falls on the different sectors, trading partners, and parties defining the objectives and implementing the traceability systems. Undeniably, economic and technical decisions on which type of traceability system should be designed and implemented involve trade-offs between system features and their related benefits and costs (Souza-Monteiro and Caswell, 2004). 12 2.2 Economics and Current Status of Traceability Systems 2.2.1 Economics of Traceability Systems Economics of traceability systems involves describing the economic incentives motivating traceability systems. The economic incentives pushing these new systems originate from the forces changing the meat marketplace and include improving animal health management and rapid response systems, meeting consumer demands for meat safety, maintaining and building international trade, verifying product credence attributes, properly assigning liability, and in improving management throughout the meat supply chain (Tonsor and Schroeder, 2006). Traceability is key to improving animal health management because it allows for quick and effective response to an animal disease event (whether it is a single incident or a full-scale outbreak). Retrieving animal location and movement data within a short time frame (i.e., USDA (2005) long-term goal of 48 hour traceback) is necessary for efficient, effective disease containment. Consumers have become increasingly concerned about the processes (i.e., inputs and methods) used to produce the beef that they eat and the intrinsic quality attributes (i.e., tenderness and nutrition) that beef possesses. Food safety and food quality issues have moved to the forefront of consumer concerns; this is much attributed to high profile food safety scares. If competitors are able to differentiate their beef and beef products as being superior to US. products in terms of the additional attributes provided and verified, the US. may lose market share in various international export markets. A prime example of this is the effect of food safety concerns on Japanese markets, including the discovery of 13 BSE in the US, which lead to heightened import restrictions and regulations. Japan was (from 1991 to 2003) the U.S.’s principal export market for beef and such concerns have lead to a loss of US. market share, because competitors such as Australia have succeeded in convincing Japanese buyers that their products are “safer” than US. products because their system provides more assurances than the US. system (Dickinson and Bailey, 2002). Finally, consumers may simply be willing to pay for traceable beef and a market opportunity may be lost to US. producers if such products are not produced in the US. (Dickinson and Bailey, 2002). Therefore, the increasing likelihood of losing export markets, due to the failure to instill confidence in foreign consumers (or in foreign political leaders) of the beef industry’s ability to produce safe food, offers an increasing return to implementing a traceability system in the US. beef industry (Golan et al., 2004). Traceability provides information on the quality of the product, because traceability systems allow producers and consumers to observe more of the production process. Traceability systems may help to verify the existence of credence attributes and can instill additional confidence in consumers that they are in fact purchasing a product possessing the characteristics they desire (Tonsor and Schroeder, 2006). Credence attributes are those quality attributes that are of concern for the consumer, but where no clues are accessible in the process of buying and consuming to confirm the attributes existence (Becker, 2000; Tonsor and Schroeder, 2006). Some examples of credence attributes offered by Hobbs (2003c) include: enhanced food safety practices on the farm or in the processing plant. Alternatively, they may identify credence attributes with 14 respect to the reduction of environmental extemalities or those related to ethical preferences with respect to animal welfare. Tonsor and Schroeder (2006) indicate that traceability systems do not alter the liability of an event; however, they can provide useful information in properly accessing legal responsibility by those involved in the production chain. An economic argument for adopting traceability systems arises from the threat of civil legal action against a firm producing unsafe food and the resulting financial damages including legal penalties, damages to a firm’s reputation, and its loss of brand capital. The ability to trace products allows liability for food safety problems to be more easily established along the supply chain and reduces the monitoring and enforcement costs for consumers and downstream food distributors by identifying the party at fault and in seeking legal compensation (Hobbs, 2004) Golan et al. (2004) and Mus (2006) defined improving management throughout the beef supply chain as the ability of a firm to reduce the cost such as movement, storage, and control of products in the supply chain and listed this as a main determinant for a company to be successful. Companies operate in the food industry where profit margins are very low, thus, supply-side management has become increasingly important for firms to remain competitive in the market. Therefore, an effective and efficient traceability system is a key factor to reducing the cost associated with the above given supply-related activities. Brester (2002) and Tonsor and Schroeder (2006) also note that implementation of a traceability system in the beef industry may aid in bringing the beef industry’s ability to transfer information throughout the production process and become more competitive with the pork and poultry industries. 15 2.2.2 Current Status of Traceability Systems Golan et al. (2004) report the existence of several beef traceability systems in the US. Though state authorities have promoted some, current systems have been mainly private and market driven. The National Animal Identification System is the well known federal beef traceability system which evolved from previous efforts to implement a national voluntary beef traceability system. The National Institute for Animal Agriculture assembled a task force in April 2002 to create the NIWP, which was later called the USAIP as presented in 2003. The USAIP called for the establishment of individual premise ID by the summer of 2004, individual animal ID by 2005, and full implementation and compliance (all covered Species and their movements - both interstate and intrastate) by July 2006 (Bailey and Slade, 2004). When USDA adopted the plan it was renamed NAIS. The National Animal Identification System has become quite well known among US. livestock producer groups after December 2003 when a dairy cow in the state of Washington was diagnosed with bovine Spongiform Encephalopathy (BSE or Mad Cow Disease). Many of the efforts and goals of NAIS, as it was originally developed and implemented, saw opposition and encountered many obstacles. The National Animal Identification System was initiated to enhance previously existing disease programs through the establishment of standards that could be used for all state/federal disease programs nationwide. The focus of NAIS is on animals that enter commerce, that is, those animals that move from their farm and ranch to markets and/or locations where they commingle with animals from other premises. This is where the impact of a disease is the greatest, both in terms of value of animals and the potential cost of lost production (Cattle Network, 2008). 16 The following NAIS component descriptions were taken from the NAIS website (USDA APHIS, 2008). Premise registration is the foundation ofNAIS and is seen as fundamental to containing animal diseases. Owners of premises involved in production or commerce of animals can voluntarily register their premises with their state or tribal animal health authority. Once registered, their premises are assigned a unique premises identification number (PIN) that corresponds to the contact information that was voluntarily provided. Producers who choose to participate in voluntary premises registration will be notified quickly when a disease outbreak or other animal health event might put their animals at risk. It is important to note that registering premises does not require producers to participate in the other two NAIS components (animal ID and animal tracing as described below). As of July 6, 2008 only about 32.86% of the 1,438,280 estimated premises nation-wide were registered (USDA APHIS, 2008). Animal ID is the second voluntary component of NAIS. Animal ID, whether individual or group/lot provides producers and owners a uniform numbering system for their animals to help manage them more closely. The individual animal identification number (AIN) is unique and stays with the animal for its lifetime. This number allows the data base to link the animal to its birthplace or premises of origin; when combined with animal tracing, the AIN also allows the data base to link the animal to each premises/location that has been reported for it. The Animal and Plant Health Inspection Service allow firms to use supplemental technologies such as a RFID and compatible ear tags as a part of their identification system (USDA APHIS, 2008; Mus, 2006). Animal ID offers a valuable tool for producers and owners whose animals enter commercial production or move to locations where they come into contact with animals from 17 multiple/other premises. In these situations, there is an increased potential for the animals to be exposed to or impact the spread of disease. Individual ID is many times the standard for animal ID; however, group/lot identification is best suited for animals that "stay together" and are raised as one group (e.g., poultry). When animals "stay together," individual ID of each animal in the group is not necessary because it would not enhance disease response efforts. In addition to protecting animal health, animal ID is many times used as a valuable tool for other, "non-NAIS" purposes - such as animal management, genetic improvement, and marketing Opportunities. When used in conjunction with other NAIS components, animal ID can also help protect producers’ access to markets. If a disease outbreak or other animal health event occurs, and a producer’s animals are not linked to any affected premises or areas, they could use animal ID numbers and movement records (included in the third NAIS component) to demonstrate that their animals are disease free. Producers may choose whether to submit their information to a privately-held or state-held database. Animal health officials will only request access to animal ID records in the case of an animal health event (USDA APHIS, 2008). Animal tracing is the final component of NAIS and is under development by states and the private sector. Once this component is complete, animal tracing should offer an additional option to improve animal management and better protect animal health. Producers will be able to choose an animal tracking database (owned and operated by private industry groups or states) and report certain animal movements that might pose a significant risk of disease transmission. When there is a disease outbreak or other animal health event, the animal tracking databases provide timely, accurate records that Show where animals have been and what other animals have come into contact with 18 them. Once the animal tracing component is complete, there will be several important points to consider when choosing whether to participate. Participating in animal tracing helps animal health officials receive accurate information about where a disease outbreak or other animal health event is occurring. Under NAIS, USDA will not have direct access to animal movement records. Private or state databases will house and maintain information regarding animal movements. Federal and state animal health officials will request access to this information only if a disease or animal health event - such as an outbreak of avian influenza or brucellosis - occurs. Federal law protects individuals' private information and confidential business information from disclosure (USDA APHIS, 2008). Private sector traceability initiatives in the beef industry include individual supply chain initiatives and industry-wide programs. Within some of these programs, firms provide voluntary labeling of credence attributes and sometimes these programs are supplemented by third party certification. Credence attributes are defined as attributes that cannot be determined even after purchase or consumption, such as animal welfare or organic production (Weiss, 1995; Roberts et a1 ., 1996). The credence nature of food safety and quality attributes may lead to markets being dominated by low-quality products if producers of high-quality (or “safer”) food are unable to offer credible assurances to consumers (Golan et al., 2003; Hobbs, 2004). Supply chain partnerships delivering traceability have emerged for multiple reasons including to help deal with the loss of consumer confidence. The meat processing sector has also recognized the potential role of traceability in bolstering consumer confidence, and as a product differentiation strategy (Hobbs, 2003b). The emergence of traceability systems in the 19 private sector can also be seen as a result of pressure from downstream food retailers who are motivated by the desire to reduce risk exposure or reduce the information costs of monitoring product quality or downstream production methods (Hobbs, 2003b). Finally, industry associations or producer groups have been responsible for introducing industry- wide private sector traceability programs. Many of these US. private industry associations or producer group traceability systems tend to be motivated by economic incentives, not government traceability regulation. These private systems allow for the verification of many USDA accredited claims, such as age and source verification, organic, natural, etc. On the private, state, and national level the USDA has utilized Process Verified Programs (PVP) and Quality Assessment Programs (QSA) that have been historically used for verification purposes in many industries and for a variety of products. In the case of US. beef cattle the USDA has established PVP’s and QSA’S to ensure the credibility and authenticity of the process claims being made about traceable beef products. This includes claims such as: age and source verified, organic, etc. Currently PVP and QSA programs exist to back these claims and traceability systems are implicit in PVP and QSA programs for ensuring credibility and authenticity. Some countries require US. beef exporters to be accredited under a USDA Export Verification Program. 2.3 Consumer Impacts/Preferences Past studies have focused on the value of information that characterizes products that could either be placed on labels or communicated to consumers in other ways. For example, research has recently focused on consumer acceptance of and government 20 policy toward genetically modified (GM) food products (e. g., Caswell, 2000; Huffman et al., 2003a,b; and Lusk, Roosen, and Fox, 2003). Other research has examined the value to consumers of providing information of different single or bundled characteristics, including certifying enhanced food safety, the processes used to produce food, the location in which food was produced, or the certifying agency (e. g., Dickinson, Hobbs, and Bailey, 2003; Loureiro and Umberger, 2006). A few studies have addressed the issue of traceability directly and have found traceability to be a valuable characteristic in food products (e. g., Dickinson and Bailey, 2002). Dickinson, Hobbs, and Bailey (2003) examined consumer WTP in Canada and the US. for traceability, transparency, and enhanced quality assurances (TTA) characteristics in red meat products. According to Liddell and Bailey (2001) traceability is sometimes called identity preservation and is defined as the ability to track the inputs used to produce food products backward and forward to/from their source at different levels of the marketing chain. Baines and Davies (1998) and Early (1998) indicate that transparency refers to the public availability of information on all the rules, procedures, and practices used to produce a food product at each level of the marketing chain. Enhanced quality assurances that can be provided by TTA are referred to as “extrinsic” qualities by Baines and Davies (1998) and are characteristics that affect neither food safety nor typical government grading, but which are still valued by consumers. This was an important analysis because valuable comparisons were identified considering the Canadian red-meat industry was moving toward more TTA, especially traceability, while the US. red-meat industry had been much slower in adopting TTA protocols. A sealed- bid Vickery style auction was the main instrument used to gain information and followed 21 the basic design suggested in Shogren et al. (1994) for eliciting bids to upgrade a meat sandwich, thus determining consumers WTP for traceability and assured quality assurances. Results for both countries were very similar in how preferences for the characteristics were ordered, and they were also similar in comparing the average bids for characteristics, hence a very close correlation was found between consumers’ WTP in both countries. One important note from this study was that traceability, while receiving positive bids, was the least valued of the three individual characteristics presented to consumers (e. g., animal welfare, food safety, and traceability). Dickinson, Hobbs, and Bailey (2003) suggested that traceability should be bundled with other characteristics that could be verified with traceability when food products were marketed with these characteristics. Another related study by Loureiro and Umberger (2006) determined the relative value US. consumers place on several beef attributes including: traceability, country-of- origin labeling (COOL), food safety inspection, and tenderness. A mail survey was used to solicit information regarding respondents’ purchasing behavior and attitudes about beef products, beef qualities found most desirable, food safety attitudes, questions involving a choice modeling experiment, and socio-demographics. Findings in this study were comparable to that of Dickinson, Hobbs, and Bailey (2003) which found that consumers placed the highest relative value on food safety certification. In a study addressing the issue of traceability directly results by Dickinson and Bailey (2002) suggest that although traceability for beef products was found to be valued to some extent; subjects placed an even larger value on specific attributes that might be 22 verified by a traceable meat system. Bids for beef traceability were statistically lower than bids for both animal treatment assurances and bids for increased food safety. 2.4 Work Needed The only known economic study examining beef industry perceptions and preference is Bailey and Slade (2004) who conducted a survey to measure the level of support among state veterinarians and representatives of producer groups. They examined how support for a Specific animal ID proposal (USAIP) varied based on concerns about animal health and the perceived costs and benefits accrued to different levels of the marketing chain. Of most importance are the representatives of the producer groups because producers will likely incur a majority of the costs. The study found that over 90% of state cattle producer association respondents indicated support for a national cattle ID program, while only 41% indicated that they supported the USAIP (Bailey and Slade, 2004). The results of this study provide evidence Showing that producers do support traceability. The lack of confidence in initial programs, as indicated by the 41% in favor of the USAIP, documents the need for determining the most important characteristics/attributes of voluntary traceability systems to aid in design and promotion of a more accepted traceability system. This in turn should help increase voluntary participation rate amongst producers in voluntary systems. A majority of the past research has sought to analyze consumer’s perceptions towards voluntary traceability systems; however, there has been little research on producer’s perceptions towards these same traceability systems. This thesis sets forth models that will examine cow-calf producer’s preferences for traceability systems and 23 system attributes which may be characterized by heterogeneity. Throughout this thesis, the term preference heterogeneity refers to variability or differences between preferences of producers. Accounting for heterogeneity of producers will be usefiil in estimating unbiased models. Incorporating and understanding heterogeneity may provide information on the distributional effects of traceability policy alternatives. 24 CHAPTER 3: OBJECTIVES The overall purpose of this research was to identify U.S. cow-calf producer preferences and perceptions regarding voluntary beef traceability systems. Meeting this core objective allowed for better identification of the potential success of alternative voluntary traceability systems that could exist in the beef industry. This “potential success” was primarily measured by producers’ preferences for traceability systems varying in attributes including premiums and discounts, entities maintaining traceability data, and the quantity and type of maintained information. This analysis sought to build upon the existing literature and prior traceability system studies by gathering and analyzing survey data from cow-calf producers to allow for the economic analysis of various voluntary traceability systems. Survey data was used to parameterize the economic analysis and inform the discussion regarding implications of traceability system design and promotion. This research sets the groundwork for identifying participation rates for various traceability programs, which future research could utilize to obtain conclusions regarding animal disease response implications. Increasing voluntary participation rate Should allow producers and animal health officials to respond more quickly and effectively to animal disease outbreaks in the US. Furthermore, a national livestock identification system can be used to launch more extensive quality assurance programs. This type of traceability system may be used as a platform on which additional quality assurances can be provided to producers further down the supply chain and to consumers. Traceability systems that are most aligned with the preferences of cow-calf producers will experience higher voluntary participation. However, traceability systems based solely on cow-calf 25 producer preferences may not maximize the nation’s ability to respond to animal disease or meet alternative goals of nationwide traceability systems. Producers and animal health officials must be conscious that lower voluntary participation in a stringent system may well be better than higher voluntary participation in a weaker system for accomplishing many of the traceability system initiatives and goals. In order to achieve the main purpose of the study as laid out above, the research was set up where a first tier of objectives was identified as well as a second tier of objectives. These objectives identified hypotheses to be evaluated which provided guidance in subsequent chapters in properly analyzing these objectives. An outline of the tier 1 objectives is as follows: 0 Tier 1: Determine preferences of cow-calf producers for alternative voluntary traceability systems and system attributes. 0 Objective 1.1: Evaluate how sensitive producer preferences are to price adjustments (premiums/discounts). 0 Objective 1.2: Examine if producer preferences are sensitive to the entity in charge of data maintenance. 0 Objective 1.3: Examine how the inclusion of additional information requirements affects voluntary participation rate. 0 Objective 1.4: Investigate how producers’ welfare is affected if alternative levels of traceability become mandatory. 0 Objective 1.5: Identify if producer preferences are sensitive to producer demographics, perceptions, and current production/technology practices. 26 The core objective of this study was to determine what preferences cow-calf producers have for alternative voluntary traceability systems and system attributes. This core objective led to evaluating a key hypothesis of: “cow-calf producer preferences for voluntary traceability systems are homogeneous.” This hypothesis was evaluated using a choice experiment designed to accomplish two main things: (1) identify “average” or representative preferences and (2) examine the extent of heterogeneity in these preferences. According to Ouma et al. (2007) the conceptual framework for choice experiments arises from the consumer theory developed by Lancaster (1966), which postulates that preferences for goods are a function of the traits or characteristics possessed by the good, rather than the good itself. Therefore, analyzing the reasoning for an observed choice can be done by examining the attributes/components of the chosen and not chosen alternatives. In turn, a value or preference for these attributes/components can be derived. Another objective was to evaluate how sensitive producer preferences were to price adjustments (premiums/discounts). This led to a set of evaluations to examine if producers are price sensitive and if this price sensitivity varied across producers. This was accomplished by evaluating heterogeneity in producer preferences for premiums and discounts to examine if all producers are equally price-sensitive. Another objective was to examine if producer preferences were sensitive to the entity in charge of data maintenance. Thus, answering the questions, do preferences for particular systems change if the entity maintaining the data switches from government to private and do preferences vary if the private entity is based within the cattle industry or not? An additional objective stemming from the choice experiment was to examine how 27 the inclusion and composition of additional information (e. g., age verification vs. production practice information) of Advanced Traceability systems affected voluntary participation rate. Continuing under the same umbrella of the core objective of this research, additional objectives were identified followed by hypotheses to test. An objective was to investigate how producers’ welfare was affected if a certain level of traceability becomes mandatory (e. g., removal of N0 T raceabilily option). This may arise as mandatory traceability systems could be introduced to correct perceived market failures when firms fail to supply the socially optimal level of traceability (Hobbs et al., 2005). Market failure can occur because the credence nature of food safety and quality attributes may lead to markets being dominated by low-quality products if producers of high quality food are unable to Offer credible assurances to consumers (Golan et al., 2003; Hobbs, 2004; Hobbs et al., 2005). Alternatively, traceability systems facilitate the traceback of products in the event of a food safety problem, reducing the impact on public health and protecting the reputation of all firms in the same industry, thus, net social benefits of a traceback system may outweigh the net private benefits, leading to underinvestment in traceability (Hobbs, 2003; Golan et al., 2003; Hobbs et al., 2005). Initially, the USDA stated that NAIS would start as a voluntary program and later become mandatory to achieve full participation with premises registration and animal ID to be required by January 2008 and the reporting of defined animal movements to be required by January 2009. However, in late 2006, the agency decided that NAIS would remain voluntary (United States Government Accountability Office, 2007). This leads to analyzing the cow—calf prOducer welfare impacts of having voluntary traceability as an option as 28 opposed to mandatory traceability as the only option where the N0 Traceability option is prohibited. We also estimated the welfare effect producers would experience given the removal of both No Traceability and Advanced Traceability alternatives. This analysis will be beneficial as the US. Government Accountability Office (GAO) report indicated that industry association officials suggested that if NAIS became mandatory, producers who have voluntarily participated would lose the market advantage they currently enjoy through higher prices paid at market or Slaughter for animals they identify for marketing or management purposes. A final hypothesis under this core objective that was identified was: “producer preferences are sensitive to producer demographics, perceptions, and current production/technology practices.” Then, if it was determined that producer preferences were sensitive to producer demographics, perceptions, and current production/technology practices it was determined how their choice of traceability systems and traceability system attributes was affected. Overall, the evaluations listed above drive the objective of designing these voluntary traceability systems in order to maximize expected voluntary participation rate, dually, showing how these voluntary traceability programs should look given alternative goals for traceability systems. Overall, immediate guidance in how voluntary traceability programs should be designed stemmed from our choice experiment and associated models. A second tier of objectives allowed for an alternative evaluation of individual perceptions of traceability systems. An outline of the tier 2 objectives is as follows: 29 Tier 2: Evaluation of individual perceptions of traceability systems. 0 Objective 2.]: Identify cow-calf producer forecasts of voluntary participation in NAIS with the registration of premises and registration of premises with the use of RF ID. Objective 2.2: Determine what type of producer and/or operations have premises registered in NAIS. Objective 2.3: Determine what type of producer is in favor of making NAIS mandatory. Objective 2.4: Determine if certain concerns and issues were still of top apprehension to traceability system participation or have producers perceptions shifted within the industry. Objective 2.5: Identify if producer preferences are sensitive to producer demographics, perceptions, and current production/technology practices. Continuing with this second tier of objectives, two sets of producer’ forecasts were then identified to acquire even more valuable information regarding U.S. cow-calf producers. Obtaining forecasts of voluntary participation in NAIS with the registration of premises and registration of premises with the use of approved animal identification devices (i.e., RFID) on cattle leaving the premises met the forecasting objective. By. utilizing these forecasts, and the characteristics that describe the most optimistic and pessimistic forecasters, a better sense of how traceability systems should be designed and promoted in order to maximize voluntary participation rate was identified. An evaluation of what type of cow-calf producer has their premises registered in NAIS was performed. Furthermore, what type of cow-calf operator is in‘favor of making 30 NAIS mandatory was determined. These two objectives were investigated judiciously because it was important to determine if producers are in favor/not in favor of mandatory NAIS because their premises were already registered in NAIS, or alternatively, did their characteristics and/or perceptions lead to their decision concerning mandatory NAIS. Previous studies (e. g., Kansas State University, 2006) identified cost to producer, reliability of technology, confidentiality of information, and liability to the producer as top concerns of cow-calf producers. Given this previous research, an objective of this work was to determine if these concerns, as well as additional concerns and issues, were still of top apprehension to participation, or have producers perceptions shifted within the industry. Producers reaffirming these factors or changes in attitudes will most surely affect the optimal design and voluntary participation rate. Once again, the typology of producers through the hypothesis, “concerns are sensitive to producer demographics, perceptions, and current production/technology practices,” was revisited in order to determine if their previous concerns held certain. Chapter five, Conceptual Framework and Models, introduces random utility theory which underlies objectives related to choice experiments (e. g., Tier 1 objectives) and was the basis for meeting the core objective. Also, unfolded within the conceptual framework chapter is theory based around the forecasting objectives. Chapter 6, Empirical Modeling, shows how each of the objectives was met econometrically utilizing Tobit, Probit, MNL, RPL, and LCM models. 31 CHAPTER 4: SURVEY AND DATA DESCRIPTION 4.1 Survey Design A survey was designed to obtain information from US. cow-calf producers regarding demographics, production practices, and potential beef traceability systems (the original survey is provided in Appendix 1). The survey was conducted by Michigan State University faculty and graduate students in conjunction with BEEF Magazine who supplied the mailing list for the survey. The random selection of farms to receive the survey allowed equal opportunity for selection regardless of participation in various farm organizations; however, given that BEEF Magazine subscribers traditionally have herd sizes greater than one-hundred animals, the sample was not expected to be completely representative of the diverse population of US. cow-calf operations. Thus, conclusions are drawn only for the producers surveyed. The comprehensive survey included questions regarding various aspects of cow- calf production, including demographics and current production/technology practices, perceptions concerning traceability, and a choice experiment focused on beef traceability. The survey data collected was used to parameterize the analysis of cow-calf producer characteristics, perceptions, and choices affecting the implementation of individual animal traceability systems. Questions regarding gender, producer’s age, state of residence (U.S. farm production region), farm organization(s) of membership, educational description, years raising beef cattle, expected years raising beef cattle, estimated annual pre-tax income, household income from off-farm sources, operation’s labor supplied by non-family (paid employees), operation's feed/forage needs produced on farm, marketing claims, 32 marketing methods, number beef cows that calved in 2007, operation’s sales at particular production stages, and animal identification methods currently used were asked to better understand the characteristics of the cow-calf producers and their operations. More in-depth questions concerning cow-calf producers’ perceptions of important issues and concerns to the US. beef industry when designing a national, individual animal traceability system were then asked to capture the most important issues and concerns of cow-calf producers. Furthermore, respondents were allowed to indicate their level of agreement with statements involving economies of scale, liability, COOL, and mandatory traceability when implementing individual animal traceability systems. Appendix 2 provides a complete list of the variables elicited from these questions and complete definitions of each as they will be used throughout subsequent discussion of model specification, results, and conclusions. A choice experiment was utilized to Simulate real-life situations in which cow- calf producers choose between alternative traceability systems. Choice experiments permit multiple attributes to be evaluated, thereby allowing researchers to estimate trade- offs between different alternatives (Lusk, Roosen, and Fox, 2003). A reference page (see Appendix 1) describing NAIS Traceability, Advanced Traceability, N0 Traceability, the entities maintaining the data, the premium/discount (per animal sold), and additional advanced traceability information was included before the choice experiment scenarios for reference in interpreting the alternative traceability options. In this choice experiment, cow-calf producers were presented with a set of four scenarios, each of which involved choosing a preferred alternative fiom three different traceability systems. The three traceability systems included: (a) NAIS Traceability, (b) 33 Advanced Traceability, and (c) No Traceability. NAIS Traceability, as the name suggests, refers to NAIS and is a voluntary state-federal-industry partnership, which is a modern, streamlined information system that helps producers and animal health officials respond quickly and effectively to animal health events in the US. The NAIS program consists of three components: (1) premises registration, (2) animal ID, and (3) animal tracing. Premise registration requires a producer to provide basic contact information. Animal ID (on an individual animal basis in cattle) provides the producer with a uniform numbering system for identifying their animals and a way of linking those animals to their birthplace or premises of origin. RFID ear tags was listed as the type of animal ID used. Animal tracing allows the producer to choose an animal tracking database (owned and operated by private industry groups or states) and report certain animal movements that might pose a significant risk of disease transmission. The USDA is left responsible for protecting individuals' private information from disclosure (USDA APHIS, 2008). Advanced Traceability was considered in the choice experiment because advanced systems besides NAIS are becoming ever more popular and available to producers. These systems provide quality signals to consumers regarding experience or credence attributes (Hobbs, 2004). Furthermore, advanced traceability systems reflect demand-side incentives, including reducing information costs for consumers, implementing product differentiation strategies, and providing accurate economic signal to producers (Buhr, 2003; Meuwissen et al., 2003; Hobbs, 2004; Golan et al., 2004; Smith et al., 2005). Finally, these advanced systems provide proactive information and quality verification which is essentially an increase in production information available to producers. Thus, it can be seen that advanced traceability systems depend on the 34 attribute(s) that drive their development. Advanced Traceability refers to a traceability system with the same basic participation requirements as NAIS Traceability, but also requires producers to record and provide additional information that is believed to be of particular interest to beef consumers and/or is believed to improve production management throughout the beef supply chain. This additional advanced traceability information includes: age verification, production practice information, performance/ genetic information, and health certifications/vaccinations records. Age verification, performance/genetic information, and health certifications/vaccinations records were only listed in the survey. Production practice information was described as information that would include, but is not limited to, growth hormones used and/or grass- fed diets used. The additional information requirements were not presented as individual or group Specific, which allowed respondents to interpret these as they seen fit. More generally, the additional information requirements were purposely not overly specific as doing so would have limited the scope of this study (e.g., required valuation of fewer attributes and/or levels). However, we do acknowledge that different perceptions of producers in the requirements of these traceability system attributes likely impacted their willingness to participate. As such, all of our conclusions are strictly based upon producer responses to the information provided to them. Furthermore, participation in this traceability system would require partaking in random verification audits to further validate consistency between on-farm practices and information maintained within. the traceability system. As recommended by Adamowicz et al. (1998), a nO-choice option was also presented to participants, because this is an obvious element of choice behavior. N0 35 Traceability refers to a scenario without participation in any individual animal traceability system. This alternative was never associated with a premium and, therefore, always presented with a discount greater or equal to $0.00 per animal sold. Accordingly, managing entity and additional information to provide were absent from this choice alternative. Among the three choices for traceability systems, attributes were randomly varied (following orthogonal fractional design procedures; Kuthfeld, Tobias, and Garratt, 1994) in order to back out cow-calf producer’s preferences for traceability system attributes. The attributes included were: (a) premium/discount per animal sold, (b) managing entity, and (c) additional information. Options differed in terms of the premium or discount (per animal sold) that a producer would receive by selecting each alternative. These price adjustments ranged from discounts of up to $15 per animal (indicating you receive SIS/animal less than the market price) to premiums of up to $15 per head (indicating the producer would receive SIS/animal more than the market price). Within the survey, negative numbers indicated discounts and positive numbers indicated premiums. Alternatives for managing entities were included due to the growing concerns among many producers regarding the collection and use of what they view as their private production information (Becker, 2007). That is why some producers want a private third-party, rather than USDA, to collect and maintain animal data. When considering government (USDA) or private entity as the manager of traceability data, producers are often concerned with who has the best qualifications for consistency of data recording and management (including confidentiality assurances), ability to respond to technical problems in the field, and the Speed of animal traceback. The entity 36 maintaining the tracing data and managing each traceability system took one of three forms: Government, Private - Industry, and Private - Not Industry. A reference to government means a government entity (such as USDA) manages and maintains the traceability system. Private - Industry means a private entity manages and maintains the traceability system. This entity is based within and owned by the beef industry. Furthermore, this entity specializes in designing, managing, and maintaining traceability Specifically for the beef industry. Private - Not Industry means a private entity manages and maintains the traceability system. This entity is not based within, and is owned outside of the beef industry. This entity specializes in designing, managing, and maintaining livestock traceability systems. The additional information required to provide in the Advanced Traceability choice was presented in all possible combinations (e. g., 24 = 16) to ensure proper survey design and exhaust all possibilities to allow for the identification of the most important and most desired combinations of additional information to provide. This also allowed for embedding of additional information combinations to be evaluated (e. g., does “WTA for age verification + WTA for health records = WTA for age verification + health records?” A concern in most choice experiments is hypothetical bias. Typically, with hypothetical questions, respondents will be more willing to choose to participate or not participate in a voluntary traceability system than they would if real money and circumstances were involved. A cheap talk script was included before the scenarios which informed respondents of the hypothetical bias. This has been shown to reduce hypothetical bias in choice experiment research (Lusk, 2003). 37 4.2 Survey Data On November 26, 2007 a total of 2,000 (1,998 effective) surveys were mailed to cow-calf producers (selected on an “nth” name basis by BEEF Magazine) throughout the country. A one-dollar bill was included in the survey to potentially increase participation and response (Gregory, 2008). The respondent pool was expected to include cow-calf operations of greater than one-hundred animals due to the characteristics of BEEF Magazine subscribers. Michigan respondents (5) were not included in the final data set because of the mandatory nature of the state’s individual, beef traceability system. Contrary to earlier expectations, 28.10% of producers indicated that their operation’s had less than one-hundred cows that calved in 2007. The respondent pool provided 655 useable surveys (32.78% effective response rate). Consistent with Michigan State University research requirements when administering a survey, respondents were presented the option to decline to answer individual questions or portions of the survey at their discretion, if they chose to participate at all. Furthermore, the protocol for this survey and research was approved by Michigan State’s University Committee on Research Involving Human Subjects (UCRIHS).l Summary statistics were computed for all questions. Appendix 3 provides a summary of responses to the entire set of survey questions. Throughout the presentation of the summary statistics, the “number reporting or N Valid” accompanies each set of summary statistics, which indicates the total number of usable responses to a given question. Many questions allowed a respondent to check all answers which were applicable to the operation from a multiple choice list, and such questions were analyzed by tabulating the total number of responses and computing frequencies. ' Institutional Review Board (IRB); number X07-1014 approved on October 23, 2007. 38 Approximately 92% of the respondents were male, with the average age of the sample being 58 years. Distribution of respondents across US. states and production regions followed the National Agriculture Statistics Service (N ASS) numbers for cattle operations (NASS, 2008). The USDA Economic Research Service (ERS) farm production regions were subsequently adjusted to help eliminate over parameterization problems in estimation. This was accomplished by combining the Mountain and Pacific regions, Lake States and Northeast region, and Southeast region, Appalachia region, and Delta States. These new adjusted farm production regions still maintained geographical differences. Figure 4.1 provides a pictorial representation of these regions. Figure 4.1. US. Regions Northern Crescent I Corn Belt Appendix 2 provides a state by state categorization of these geographical regions. Based on the 2007 calendar year, producers indicated that 60.91% of the operations had less than two-hundred beef cows that calved. Plastic ear tags were the most commonly 39 used form of animal ID (87.89%), with RFID being the least used at 9.18%. F orty-four percent indicated their operation’s premises were currently registered with NAIS. Contained in Appendix 3 (Tables 23-3 0) is a summary of ordered responses regarding cow-calf producer’s perceptions of the importance of certain issues and concerns to the US. beef industry in designing a national, individual animal traceability system. Furthermore, this summary provides cow-calf producer’s agreement with statements concerning economies of scale, liability, COOL, and mandatory traceability when implementing individual animal traceability systems. Also provided are results of producers’ perceptions concerning the allocation of benefits and costs when implementing traceability systems and forecasts for NAIS premise registration and RFID use. If individual animal traceability systems were put in place, cow-calf producers believe most of the benefits are distributed rather evenly, whereas they believe costs are largely born by the cow-calf producers. Fifty percent of respondents believe that NAIS should not be mandatory, 21% indicated NAIS should be mandatory, and 29% of producers were undecided. Finally, forecasts for US. cow-calf operations with premises registered in NAIS by December 31, 2008 averaged 40%, while forecasts for US. cow-calf operations with premises registered in NAIS and RF ID used by December 31, 2008 averaged 31%. The last section of Appendix 3 (Tables 3 1-3 7) provides summary tables of the hypothetical choice experiment. Approximately 75% of the choice experiments were returned completed. The remaining 25% were either left blank or partially completed. These survey findings will be discussed in subsequent chapters with regards to how they inform the underlying economic analysis of factors affecting which producers 4o and/or operations currently participate or would choose to participate in certain traceability systems. Economic and management implications will then be parameterized using the results to better enable the designing of individual, voluntary beef traceability systems. 41 CHAPTER 5: CONCEPTUAL FRAMEWORK AND MODELS In this chapter, the conceptual framework and models corresponding to the objectives outlined in chapter 3 and underlying the empirical models that will be estimated are developed. This involves describing the economic theory driving these model specifications. The model development discussion is followed by a discussion in the following empirical modeling chapter concerning evaluation procedures used in examining the appropriateness of the developed models and the techniques and variables employed. To further aid in following this progression, Figure 5.1 is provided as a guide. Figure 5.1. Conceptual Model Progression Flow Chart / Conceptual Framework 5.1 Forecasting Framework 1 5.1.1 5.2 Tobit Model Probit Model Specifications 53 1 Choice Model Specifications 5.2.1 1 Multinomial Probit 5.3_1 [ Multinomial Logit 5.2.2 I Binary Probit 5.3.2 1 Random Parameter Logit 5.2.3 T Endogeneity Bias 5.3.3 I Latent Classification Model 5.2.4 Trinomial Probit L 5.2.5 Ordered Probit 42 5.1 Forecasting Framework When analyzing producer intentions, an important question is what factors cause intention development. The presumption is that beliefs are key elements in forming attitudes, intentions, and eventually influencing behavior (Han and Harrison, 2006). Beliefs represent the base set of information a producer has about an object or concept (Fishbein and Ajzen, 1975). Thus, these beliefs will describe all the thoughts a producer has about systems in association with various attributes, and beliefs play an important role in forming attitudes towards action. When producers are asked to forecast participation and usage rates (e.g., NAIS registration and RFID use) concerning aspects of voluntary traceability systems their beliefs about the future may be based on their current attitudes and characteristics. Thus, providing insight into the characteristics of the most optimistic and pessimistic forecasters. Given that forecasts by design range from 0 to 100% (Appendix 1, survey question 24); to analyze producer stated forecasts of participation and usage rates, Tobit models were utilized where forecasts were modeled as zero for a fraction of the population but are roughly continuously distributed over positive values (Wooldridge, 2003). 5.1.1 Tobit Model The Tobit model developed by Tobin (195 8) supposes that the decision to participate in the market is- the same as the decision about the quantity or extent of participation. This implies that any variable that increases the probability Of nonzero value must also increase the conditional mean of the positive values. 43 Compared with the Probit model as described in a later section, which is based on the cumulative distribution and estimates the probability of the dependent variable lying inside at a 0-1 interval, the Tobit model was adopted, as it does not throw away any information on the value of the dependent variable (Gong et al., 2007). In situations when there is an upper or lower bound on an outcome variable, an appropriate statistical model to apply is a Tobit model with left (lower) and/or right (upper) censoring. The censored regression or Tobit model is appropriate when the dependent variable is censored at some upper or lower bound as an artifact of how the data are collected or measured (Tobin, 195 8). The general formulation that is typically presented is for censoring at a lower bound of zero and is usually given in terms of an index function (Greene, 2000): VI =XiB+€i €~N(0,02) (5.1) yi=0 ifyfso, Yi=YI ifYI>0. where the index variable, sometimes called the latent variable, E[y: | Xi] is x'iB , s is the error, and B is a vector of coefficients to be estimated. For the ith observation, y: is an unobserved latent continuous variable, Yi is the observed variable, x; is a vector of values on the independent variable or explanatory variables, and it is assumed that 8: is uncorrelated with x; and is independently and identically distributed. This specification can also be written to encompass the more general double bounded range in which: 44 y: =x§B+ai 8~N(0,0’2) y: =YI ifLUik) Vkij. Probit models can be used to model any discrete choice/selection Situation. The random utility framework was first utilized in Probit model specifications in analyzing producer behavior in discrete choice situations. The multinomial Probit model, which assumes that decision makers may be modeled as coming from a population of random utility maximizers, where the error component is in the (unobserved) utilities arise from a multivariate normal distribution (McFadden, 1981; Bunch and Kitamura, 1991). Now, the probability that individual It selects alternative j is given by: (5.5) Prob[UnJ- > Uni] v i .4 j where this equation has a utility function in which alternative j is only chosen if it yields the highest utility across individuals n. 5.2.2 Binary Probit In our application of binary Probit models it is assumed that producers attempt to maximize their utility when they face a binary choice. An example application in this work is the ‘yes’ or ‘no’ decision of registering premises within the NAIS system (e.g., question 22 of the survey in Appendix 1). Following Wooldridge (2003) in a binary response model, interest lies primarily in the response probability: (5.6) Prob[Y =1 |x]= Prob[Y =1 |x1,x2,...,xk], 46 For specifying the Probit models consider a class of binary response models of the form: (5.7) Prob[Y =1 |x]= G[B0 + lel + + kak] = G[B0 + x13] , where G is a function taking on values strictly between zero and one: 0 < G(z) < l, for all real numbers 2. This ensures that the estimated response probabilities are strictly between zero and one. This estimation and subsequent estimation of Probit choice models will be based on the method of maximum likelihood. The nonlinear Probit model for the function G ensures that the probabilities are between zero and one. G is a standard normal cumulative distribution function (CDF), which is expressed as an integral: (5.8) G(z)=¢ 0], 0 Otherwise where the notion of 1[y: > 0] is used to define a binary outcome. The function Yi = 1[y: > 0] is called the indicator function which takes on the value one if the event in the brackets is true, and zero otherwise. Therefore, y is one if y* > O , and y is zero if y* S 0. It is further assumed that e is independent of x, 8 has a standard normal distribution, and 8 is symmetrically distributed about zero implying that l— G(—z) = G(z) for all real numbers 2. Given the assumptions presented above, the derived response probability for y is: 47 (5.11) Prob(y =1|x)= Prob(y* > O | x) = Prob[e > —(BO + xB) | x] = 1- GKBO + x3)] = G(Bo + X13). which is exactly the same as the binary response model shown in equation (5.7) (Wooldridge, 2003). In this model the primary goal is to explain the effects of the x J- on the response probability Prob(y = l Ix). In the application of these Probit models sample selection bias and/or endogeneity bias may need to be dealt with, so depending on the question at hand, different techniques may need to be applied. 5.2.3 Endogeneity Bias An example of potential endogeneity bias in this analysis arises when estimating whether producers believe that NAIS should be a mandatory system requiring all US. cattle producers to participate. The interest lies in how various factors, such as demographics and production/technology practices, affect producers’ beliefs regarding mandatory traceability. Being currently registered in NAIS may be systematically correlated with unobservable factors that affect beliefs about mandatory NAIS, potentially producing biased estimators. Endogeneity refers to the fact that an independent variable included in the model (e.g., having NAIS registered premises) is potentially a choice variable, correlated with unobservables relegated to the error term. In this situation, the dependent variable (beliefs regarding if NAIS should be mandatory), is observed for all observations in the data, so because the entire sample is used, there are no sample-selection issues (Millimet, 2001). Rather, this is an issue addressed in simultaneous-equation models considering the potentially endogenous variables (having NAIS registered premises) in an equation 48 separate from the equation of original interest (beliefs regarding if NAIS should be mandatory). Unlike single-equation models, in the simultaneous-equations models one estimates the parameters of each equation while taking into account information provided by other equations in the system (Gujarati, 2003). Following Gujarati (2003), consider the following system of equations: (51?) Yli = 1310 +YIIXIi tun (5-13) Y2i = 1320 +521Y11+Y21X1i+u2i where Y; and Y2 are mutually dependent, or endogenous, stochastic variables, X; is an exogenous variable, and ul and u2 are stochastic disturbances terms. Thus, for estimation purposes, it must be determined if the stochastic explanatory variable Y1 in equation (5.13) is distributed independently of u] . Referring to equation 5.12 and 5.13 for a procedure on how to remedy this issue, first equation 5.12 is estimated and the predicted values are obtained. Using the predicted values the Inverse Mills ratio is calculated. Then, including the Inverse Mills Ratio as an explanatory variable in the estimation of equation 5.13 (instead of Y1 itself) can be done to test for endogeneity. If the Inverse Mills Ratio is found to be statistically significant, then evidence of endogeneity exists, justifying the bias correction procedure of including the Inverse Mills Ratio as an explanatory variable. If it is statistically insignificant, then we fail to reject the null hypothesis of exogeneity. 49 5.2.4 Trinomial Probit Extending this discussion in analyzing trinomial situations with the Probit model we look to calculate the probability of choosing one of three alternatives. This can be Shown by: (5.14) Prob[U3 2 U1 and U3 2 U2] = PI’Ob[U1—U3 SOflI‘ld U2 —U3 SO] 5.2.5 Order Probit An extension of the Probit model applies to models in which there is an ordering to the categories associated with the dependent variable (Pindyck and Rubinfeld, 1996). That is, often the response variable can have more multiple outcomes and very often the outcomes are ordinal in nature; that is they cannot be expressed on an interval scale (Gujarati, 2003). An example in this research is that some responses are on a Likert-type ’9 ‘6 3, 6‘ scale, such that a respondent indicates “entirely unimportant, unimportant, neutral,” “important,” and “very important.” Within an ordered Probit model the following specification was used: * I (5.15) yi = xii} + 3i t . . . , , . where VI 18 the latent and contInuous measure of Interest faced by respondent 1, Xi IS a vector of explanatory variables describing respondent i, B is a vector of parameters to be estimated, and Si is a random error term (assumed to follow a standard normal distribution). The observed and coded discrete continuous measure of interest, y; , is determined from the model as follows where it is assumed that there is an underlying index Z for each respondent that measures the degree of their response. As shown in 50 Pindyck and Rubinfeld (1996) the ordered Probit model assumes that there are cut-off points Z * and Z ** which define the relationship between the observed and unobserved dependent variables, specifically, Zi = or + BXi, and l3 if 2i 2 z” (5.16) yi< 2 if z” < zi < z" lif z, 52* l where the Zi’s represent thresholds to be estimated (along with the parameter vector [3). This general specification may be extended to use in multiple size Likert-type response questions. 5.3 Choice Model Specifications Random utility theory frequently underlies objectives related to choice experiments. Thus, models based on random utility, can be used to identify the set of feasible alternatives producers may choose among a set of choices. As shown in Nakosteen and Zimmer (1980) suppose that, an agent’s utility of two choices, can be denoted Ua and Ub. The observed choice between the two reveals which one provides the greater utility, but not the unobservable utilities. Thus, the observed indicator equals 1 if U3 > Ub and 0 if U21 S. Ub. There are multiple approaches that may be employed to model random utility. To begin, a common formulation is the linear random utility model (Greene, 2000): (5.17) Ua = x'p, +2, and Ub = x'Bb +eb Then, if Y = l is denoted by the agent’s choice of alternative a: 51 (5.18) Prob[Y = 1 | X] = Pr ob[Ua > Ub] = Prob[x'Ba + ea -x’Bb - 8b > O | x] = Prob[x'o. 431,) + 2. -eb > 01x1 = Prob[x'B + e > 0| x] 5.3.1 Multinomial Logit This random utility framework can be applied to the initial sets of models that will be estimated which are typically referred to as multinomial (or conditional) Logit models. The conditional logistic models estimate producer random utility [Adamowicz et al. (1998); Lusk, Roosen, and Fox (2003); and Schroeder et al. (2005)] which can be characterized by the following equation: where U j, is the utility associated with alternative j in choice scenario t, vJ-t is the systematic, observable component of utility determined by attributes and their values, and ejt , is a random, unobservable component of Logit models, independently and identically distributed over all alternatives and choice situations. This random component of the producer’s utility function is included to capture the variation in producers choices (i.e., a producer may not choose what seems to the analyst to be the “preferred” alternative or the analyst may simply fail to incorporate all relevant explanatory variables in X). A producer will choose alternative j if U J- 2 Uk for all j ¢ k. So, the probability that alternative j will be chosen is equal to the probability that the utility gained from its choice is greater than or equal to the utilities of choosing another alternative in the choice set. However Since these utilities contain a stochastic 52 component, researchers can only describe the probability of producers choosing alternative j as (Boxall and Adamowicz, 2002; Adamowicz et a1, 1998): (5.20) Prob(jchosen}= prob{vj + ej 2 vk +sk; j¢ k V j e C} where C is the choice set of all possible alternatives. Assuming the random errors in (5.19) are independently and identically distributed across the j alternatives and N individuals with a type I extreme value distribution, Adamowicz et a1 (1998), Boxall and Adamowicz (2002) and Lusk, Roosen, and Fox (2003) have shown that the probability of a producer choosing alternative j becomes: CHBXI Eieufixk keC (5.21) Prob(i chosen}= where u is a scale parameter, which is inversely related to the variance of the error term. According to Lusk, Roosen, and Fox (2003) the scale parameter, p, is typically assumed equal to one because it is unidentifiable within any particular data set. [3 is a vector of parameters. Assuming the systematic utility component v j is linear in the parameters and follows the generalized regression specification leads to: (5.22) vj = 51le +132sz +... +anjn where x jn is the n-th attribute value for alternative j and [in is a vector of preference parameters associated with the n-th attribute of the j-t‘h alternative. The 13's are utility parameters to be estimated, initially assumed to be constant across producers. That is utility levels are independent of characteristics and perceptions that may vary across producers. Multinomial Logit models assume that all respondents share the same coefficients for a given attributes. That is, all respondents are assumed to have the same 53 preferences for attributes. This assumption may be unrealistic if producer’s tastes are in fact heterogeneous. As such, the homogeneous producer tastes assumption is evaluated using random parameter Logit and latent class models as described below. 5.3.2 Random Parameter Logit Utility parameters can be allowed to vary across the sampled observations (as random parameters) and therefore deviate from the surveyed population mean. A random parameters Logit model, as well as the previously discussed models, was used to determine producer willingness-to-accept (WTA) in alternative voluntary traceability systems relative to one another. The RPL model allows for random taste variation within the surveyed population, is free of the independence of irrelevant alternatives (IIA) assumption, and allows correlation in unobserved factors over time, thus eliminating three limitations of standard Logit models (Revelt and Train, 1998; Train, 2003; Tonsor et al., 2005). These three limitations are also avoided in the latent class model shown below. This aids in the ability to directly estimate heterogeneity in producer preferences. Specification of the random parameters Logit model is given by: (5-23) Uijt = Vijt + [uij + 81th where Uijt is the utility producer i associates with attribute j in choice scenario t, Vijt is the systematic portion of the utility firnction, uij is an error term distributed normally over producers and alternatives (but not choice situations), and Sijt is the stochastic error, independently and identically distributed over all producers, attributes, and choice scenarios. This describes a panel data model where the cross-sectional element is producer i and the time series component is the choice scenario j (Alfnes, 2004; Tonsor et 54 al., 2005). The probability that producer i chooses alternative j in choice scenario t is given by: (5.24) Prob(UiJ-t 2 Uikt) for all possible k attributes. Following Alfnes (2004) and Tonsor et al. (2005) and assuming Vijt is linear in parameters, the utility function can be expressed as: (525) V1: = 311x“: + Bizxzit + + Pijxijt where xijt is the j-th attribute value for choice scenario I for producer i and Bj is a vector of preference parameters associated with the j-th attribute of the t-th choice to scenario of the i-th producer. We specify 13 to vary normally across producers. The random parameters provide a rich array of preference information. They define the degree of preference heterogeneity through the standard deviation of the parameters and through interactions between the mean parameter estimate and the deterministic segmentation criteria, where the latter include other attributes of alternatives, socio-economic and contextual descriptors, and even descriptors of the data collection method and instrument. Random parameters are also the basis for accommodating correlation across alternatives and across choice situations (Hensher, Rose, and Greene, 2005). RPL and latent class models examine heterogeneity differently and differ in their ability to explain the identified heterogeneity. RPL models explicitly account for heterogeneity by allowing parameters to vary randomly over individuals (Layton, 1996; Train, 1997, 1998). While these random parameter Logit procedures incorporate and account for heterogeneity, they are not well—suited to explaining the sources of 55 heterogeneity (Boxall and Adamowicz, 2002). These sources often relate to the socioeconomic characteristics and tastes of the decision maker (Ouma et al., 2007).2 Latent class models are better suited in explaining the sources of heterogeneity, because individuals are intrinsically sorted into a number of latent classes (Ouma et al., 2007). Each segment (or latent class) is characterized by homogeneous preferences though heterogeneous across classes (Boxall and Adamowicz, 2002). 5.3.3 Latent Classification Model Boxall and Adamowicz (2002) describe the latent classification/segmentation approach to assume the existence of s segments in a population where individual n belongs to segments (5 = l, ..., s). The latent classification approach assumes that 3 segments of producer preferences exist such that preferences are homogeneous for producers within each segment but heterogeneous across segments. The utility function can now be expressed: (5-26) Vnils = Bsxni +8nils In this expression the utility parameters are now segment specific. The probability of a producer choosing alternative j is: ellsl3sxi 261155st kEC (5.27) Prob{/' chosenls}= where the [3's and u's are segment-specific utility and scale parameters respectively. 2 Though it is possible to account for the socioeconomic characteristics of the decision maker by interacting key individual characteristics with the traits, this requires a priori selection of key limited individual- specific variables (Ouma et al., 2007). 56 The paper applies this latent classification approach to a set of voluntary beef traceability system choice data. The behavioral components come from a choice experiment in which three attributes of voluntary traceability systems were varied. The analysis assesses simultaneously the influence of individual characteristics, motivational aspects, and the influence of choice-based attributes in the estimation of latent segments (Boxall and Adamowicz, 2002). 57 CHAPTER 6: EMPIRICAL MODELING The survey data, which was summarized in chapter 4, was utilized to provide economic insight into why varying types of cow-calf operations choose alternative voluntary traceability systems and to identify those characteristics affecting producers’ choices. Appendix 2, as explained in Chapter 4, provides a complete list of the variables elicited from these questions and complete definitions of each. This chapter follows a structured dialogue of theoretical and empirical evaluation procedures used in examining the appropriateness of the developed models. In particular, specific applications of Tobit, Probit, and Logit models uniquely specified to address the objectives of this research were presented. The discussion of Tobit and Probit models will focus on the portion of the survey not involved with the choice experiment. Models throughout this discussion will take the following general form: (6.1) Variable of interest = f(Demographics, Production Practices, Perceptions) where Demographics, Production Practices, and Perceptions are vectors of multiple variables. Discussion of MNL, RPL, and LCM models involved estimation of models analyzing the choice experiment responses while also utilizing select variables from the previously discussed portion of the survey in the analysis. Producer’s demographics, production practices, and perceptions will likely have large impacts on their decisions concerning their beliefs, current practices, and choices regarding traceability systems. Controlling for demographics is necessary for examining the relative impacts of demographics to the impacts of other factors like perceptions and current production practices. Some production methods may decrease support because 58 producers would not like to share that information with the rest of the production chain; while some production methods may increase support because producers can use these claims to increase marketability. Some marketing methods may decrease support because producers may not see the need when they are marketing directly to consumers because the beef is already “traceable.” While other marketing methods may increase support because producers can use these claims to increase marketability. Producers’ perceptions regarding important issues to the US. beef industry when designing a voluntary traceability system examined if producers are more concerned with issues such as disease implications or marketability. Perceptions regarding concerns to the US. beef industry when designing a voluntary traceability system may also impact support. A factor analysis was performed on three sets of producer perception variables or eighteen statements (questions 17, 18, and 19 in the survey, Appendix 1) prior to estimation. The scores from the 18 statements were factor analyzed using principle component analysis with varimax rotation. Components were extracted until eigenvalues were less than or equal to 1.0 (Boxall and Adamowicz, 2002). The factor analysis identified three components across the given set of statements. However, these three components were not very informative as they simply consisted of each question (17, 18, and 19, respectively) within the survey. Therefore, the factors were not used as explanatory variables in subsequent models. 6.1 Tobit Models The survey asked cow-calf producers to forecast future NAIS registration and RFID use rates among cow-calf producers in the US. beef industry. Examining the 59 characteristics that describe the most optimistic and pessimistic forecasters may provide a better sense of how the NAIS traceability system and RFID technology could be promoted to enhance voluntary participation. This analysis helps in meeting the objective related to cow-calf producer forecasts in chapter 3. More specifically, Tobit models will be used to evaluate responses to the two part question (question 24 of the survey, Appendix 1): 0 ”If the NA IS system remains a system of voluntary participation, by December 31, 2008 what do you predict will be the percentage of US. cow-calf operations with premises registered in NAIS? ” 0 “If the NAIS system remains a system of voluntary participation, by December 31, 2008 what do you predict will be the percentage of US. cow—calf operations with premises registered in NAIS M using NAIS approved RF ID animal identification devices on the percentage of cattle leaving their premises. ” The forecasting questions will help give an indication of where producers believe the future (in this case specified as December 31, 2008) of the beef industry is going with the voluntary NAIS system. If a producer believes that NAIS registration and RF ID use rates will be high in the future then arguably they may be more likely to accept and support such programs. Alternatively, if they believe traceability will not be implemented within the industry a lack of support may be more likely. The bivariate empirical Tobit model for the forecast of NAIS participation and forecast Of NAIS participation and RFID use took the form: 60 (6.2) y: = a0 + otlAge + (12 Member + a3 Years + a4Eprears + a5Cows + a6Auctions + a7RFID + as Re gNAIS + orgManNAIS + (110C Retailers + 0111C Pr ocessors + or] ZCFeedlotS + e] y; = so + BlAge + BZCB + B3NP + B4NW + B5SE +1363P + B7cMember + BgEducation + 139 Years + BloEprears + Bl llncome + Blelncome + [313Labor + B14OFeed + B15Cows + B16Auctions + [317PTags + Bl 3ENotches + [319Brand + Bonattoo + [32 lMTags + BZZRFID + [323NOID + [324 Re gNAIS + BZSManNAIS + 82 where y] = producer forecast of NAIS premises registration, y 2 = producer forecast of NAIS premise registration and RF ID use, or' s and [3' s are coefficients to be estimated and the explanatory variables are defined as described in Appendix 2. If the model’s error terms are correlated, joint estimation will allow for an increase in effiency, thereby leading to more consistent 13' s. 6.2 Probit Models Probit models will be applied to these specific survey questions (22 and 23 in the survey, Appendix 1): (1) “Are your operation ’s premise(s) currently registered with USDA in the NAIS Wational Animal Identification System)?” and (2) “Do you believe that NAIS (as previously outlined) should be a mandatory system requiring all US. cattle producers to participate?” 61 6.2.1 Binary Probit Question (1) will follow a binary format as the question elicited a “yes or no” response. The empirical Probit model for the first question of whether producers’ premises were currently registered in the NAIS system was: (6.3) yf = so + BlAge + BZCB + B3NP + B4NW + [358E + eésP + B7Member + BgEducation + [39 Years + BloEprears + [51 llncome + BleIncome + [313Labor + [314OFeed + B15Cows + B16Auctions + BI7PTags + B] 8ENotches + BlgBrand + Bonattoo + BZIMTags + B22RFID + B23NOID + B25ManNAIS + a] where y1 = 1(0) if a producer answered Yes(No), [3' s are coefficients to be estimated, and the explanatory variables are defined as described in Appendix 2. 6.2.2 Endogeneity Evaluation Question (2), whether NAIS should be mandatory, followed a trinomial format as the question elicited a “yes or no or undecided” response. To examine if responses to question (2) were endogenously determined with question (1), a two-stage estimation was performed (Wooldridge, 2002). Significance of the Inverse Mills ratio coefficient led to reject exogeneity of question (2) from question (1). 6.2.3 Trinomial Probit Estimating the trinomial Probit model was based upon producers’ beliefs concerning mandatory NAIS; where producers chose between (i) NAIS §_I_1_O_ufl be mandatory, (ii) undecided whether NAIS should be mandatory, and (iii) NAIS should not be mandatory. 62 (6.4) yilt = a0 + otIAgeit + or2CBit + 013NPit + a4NWit + aSSEit + a6SPit + 0L7Memberit + agEprears it + a9 Years it + alolncomeit + or] lCowsit + onleuctionsit + a13B Re tailersit + orMB Pr ocessorsit + or] 5BFeedlotsit + a16C Re tailers it + (117C Pr ocessorsit + or] 3CFeedlotsit + otlglnvMillsit + a}, Yizt = Bo + BIAgeit + [32081: + B3NPit + B4Nwit + 135351: + 13651’1: + B7Memberit + [33 Eprears it + [39 Years it + Blolncomeit + B1 lCowsit + [ileuctionsit + [313B Re tailersit + [314B Pr ocessorsit + B1 5BFeedlotsit + [316C Re tailersit + B17C Pr ocessorsit + B18CFe€dIOtSit + BlglnvMillsit + 8% where yilt = 1 indicates a belief that NAIS should be mandatory (0 otherwise), and yizt = 1 indicates a producer being undecided about NAIS being mandatory (0 otherwise).3 The Inverse Mills ratio (InvMills) is equal to the standardized predicted values from equation 6.3. [5' S are coefficients to be estimated, and the explanatory variables are defined in Appendix 2. Maximum Likelihood Estimation (MLE) to jointly estimate equations (6.3) and (6.4) would have been preferred; however, the PROC QLIM procedure in SAS (which was used on the previous models and some of the subsequent models) does not currently support multinomial Probit estimation. SAS does not provide an option to specify multinomial Probit models for this system (SAS, 2008). Multinomial Probit models are supported in the PROC MDC procedure in SAS; however, given the endogeneity issue with the registered NAIS equation it does not allow systems of equations to be estimated as would need to be done. Therefore, STATA was used in the estimation of this equation and a two-stage procedure using the Inverse Mills ratio was used to deal with the endogeneity issue. 3 y ilt = 0 and yizt = 0 implies a producer believes NAIS should not be mandatory. 63 6.2.4 Ordered Probit Ordered Probits were used to estimate questions in which there was ranked responses as given in the following questions (l7, l8, and 19 in the survey, Appendix 1): (1) “In designing a national, individual animal traceability system how important are the following issues in the US. beef industry (please circle your answers where I = Entirely Unimportant, 2 = Unimportant, 3 = Neutral, 4 = Important, 5 = Very Important)?” (2) “In designing a national, individual animal traceability system how concerned are you regarding the following issues in the US. beef industry (where I = Entirely Unconcerned, 2 = Unconcerned, 3 = Neutral, 4 = Concerned, 5 = Very Concerned)?” (3) “Indicate your level of agreement with each of the following statements (Where 1 = Strongly Disagree, 2 = Disagree, 3 = Neutral, 4 = Agree, 5 = Strongly Agree). Implementing individual animal traceability systems: (i) “is more cost eflective for larger cow-calf operations. " (ii) “results in more liability for cow—calf producers than cattle owners at other stages of production ” (iii) “is unnecessary if COOL (C ountry-of-Origin Labeling) was implemented nationally. ” (iv) “as a mandated system is exaggerated?” The empirical Probit model for these questions was: (6.5) y: = BO + BlAge + BZCB + B3NP + B4NW + [358E + B6SP + B7Member + figEducation + BgYears + BIOEprears + 131 llncome + Blelncome + [313Labor + BMOFeed + B] 5Cows + [316Auctions + B17 Re gNAIS + 81 64 where [3' S are coefficients to be estimated, and the explanatory variables are defined as described in Appendix 2. 6.3 Multinomial Logit Models The choice experiment framework was designed to improve the understanding of traceability system choices and preferences by requiring cow-calf producers to choose between two traceability system options and a No Traceability system option (reference data/survey discussion and/or Appendix A showing the CE scenarios). Data obtained through choice experiments has traditionally been analyzed using multinomial Logit models (e.g., Lusk, Roosen, and Fox, 2003). Because, producer-level support, or lack of support, for voluntary traceability systems in the US. will be based on the net benefits producer groups perceive they would receive from the system and their underlying utility functions, empirical modeling and subsequent examining of preferences for alternative systems should allow researchers to better determine optimal voluntary systems (Bailey and Slade, 2004). Recall that multinomial logistic models estimate producer random utility as (Adamowicz et al., 1998; Lusk, Roosen, and Fox, 2003; and Schroeder et al., 2005): (6.6) th = Vjt +8jt where U jt is the utility associated with alternative j in choice scenario t, v jt is a systematic, observable (explainable) component of utility determined by attributes and their values, and sjt , is a random, unobservable (unexplainable) component of Logit models, independently and identically distributed over all alternatives and choice 65 situations. Assuming vJ-t is linear in parameters, vJ-t is specified individually for each of the three available alternatives (two traceability system options and a No Traceability system option): (6.7) vj, = B1(PDJ-t) + B2(Pvtljt) + B3(PvtNIJ-t) v j = NAIS Trace (6.8 Vjt )= BAdv Trace + 131(PDjt) +132(PVfljt)+ 133(PV1N1jt) + 134(PPjt ) + 55(PGjt) +156(HRjt)+ 137(AVPPjt) + B8(AVPGjt) + B9(AVHRjt) + BlO0 then Premium=l;else Premium=0; PD_Disc=PD*Discount; PD_Prem=PD*Premium; run; /*Create separate data set for only fully complete and balanced panal data set*/ data dataCEcomplete;set Rawdata_pane12; if CEbalanced=0 then delete; run; /*311**IIUIUIHIUIHI‘*******************11‘Il‘*******ll:******************************/ /**=1!*********4!#101!*********IlUlI**************#***************************/ 193 5.2 STATA *Now Looking at Endogeneity Bias with regnais*/ dprobit regnais age erscb ersnp ersnwa erssea erssp countfo yrsr expyrsr edu income oincome labor ofeed bctc dumla dumpetid dumenid dumbrdid dumtatid dumbrid dumrfid dumnoid mannais *Predicting Inverse Mills Ratio*/ predict yhat, xb generate phi = (1/sqrt(2*_pi))*exp(-(yhat"2/2)) generate capphi = norm(yhat) generate invmills = phi/capphi *Trinomial Probit or Nested Probit for Evaluating Question 23 (mannais)*/ *(23)Do you believe that NAIS (as previously outlined) should be a mandatory system requiring all U.S. cattle producers to participate? (Yes, No, or Undecided)*/ *Final Regression After Testing*/ mprobit mannais age erscb ersnp ersnwa erssea erssp countfo yrsr expyrsr income bctc dumla bretmccp bprocmccp bfdlpmccp cretmccp cprocmccp cfdlpmccp invmills mfx compute, predict(outcome(2)) dydx at(mean) mfx compute, predict(outcome(1)) dydx at(mean) mfx compute, predict(outcome(0)) dydx at(mean) /***IIUIUIHII***************************************************************/ /**********************************************************************/ 194 5.3 LIMDEP $LIMDEP Code for CE Estimation$ RESET READ;FILE="E:\LIMDEP__Import.xls" $Summary Statistics$ DSTAT;Rhs=DECUSE,PD,PD_prem,PD_disc,Cdum,Bdum,ME_PI_EC,ME_PN_EC, AI4PP_EC,AI4PG_EC,AI4HV_EC,bctc,countfo,yrsr,dum1a,indv_id,group_id,no_ot_id, erscb,ersnp,ersnwa,erssea,erssp,AI9PP_EC,AI9PG_EC,AI9HV_EC,AI9AVPP_, AI9AVPG_,AI9AVHV_,AI9PPPG_,AI9PPHV_,AI9PGHV_,AI_PP_EC,AI_PG_EC, AI_HV_EC,AI_AVPP_,AI_AVPG_,AI_AVHV_,AI_PPPG_,AI_PPHV_,AI_PGHV_, AI_AVPPP,AI_AVPPH,AI_PPPGH,AI_FL_EC,BD_erscb,CD_erscb,BD_ersnp, CD_ersnp,BD_ersnw,CD_ersnw,BD_ersse,CD_ersse,BD_erssp,CD_erssp$ $Important DECUSE in this code has a mean of 0.33333, so CE models work$ $Creating BDUM and CDUM interactions with Demos CREA;Fill;BD_age=Bdum*age$ CREA;Fill;CD_age=Cdum*age$ CREA;Fill;BD_bctc=Bdum*bctc$ CREA;Fill;CD_bctc=Cdum*bctc$ CREA;Fill;BD_dumla=Bdum*dumla$ CREA;Fill;CD_dumla=Cdum*dumla$ CREA;Fill;BD_countfo=Bdum*countfo$ CREA;Fill;CD_countfo=Cdum*countfo$ CREA;Fill;BD_erscb=Bdum*erscb$ CREA;Fill;CD_erscb=Cdum*erscb$ CREAgFill;BD_ersnc=Bdum*ersnc$ CREA;Fill;CD_ersnc=Cdum*ersnc$ CREA;F i11;BD_ersnp=Bdum*ersnp$ CREA;FiIl;CD__ersnp=Cdum*ersnp$ CREA;Fill;BD_ersnwa=Bdum*ersnwa$ CREA;Fi1l;CD_ersnwa=Cdum*ersnwa$ CREA;Fill;BD_erssea=Bdum*erssea$ CREA;Fill;CD_erssea=Cdum*erssea$ CREA;F i11;BD_erssp=Bdum*erssp$ CREA;Fi11;CD__erssp=Cdum*erssp$ CREA;Fill;BD_yrsr=Bdum*yrsr$ CREA;Fill;CD_yrsr=Cdum*yrsr$ CREA;Fill;BD_indid=Bdum*indv_id$ CREA;Fill;CD_indid=Cdum*indv__id$ CREA;Fill;BD_grpid=Bdum*group_id$ 195 CREA;Fi11;CD_grpid=Cdum*group_id$ CREA;F ill ;BD_notid=Bdum* no_ot_id$ CREA;Fill;CD_notid=Cdum*no_ot_id$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $Preferred Models $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $MNL $MNL (PD & Demos & ERS Regions & 13/14 AI) NLOGIT;th=DECUSE;Choices=1,2,3; Rhs=PD,Cdum,Bdum,ME_PI_EC,ME_PN_EC, AI_PP_EC,AI_PG_EC,AI_HV_EC,AI_AVPP_,AI__AVPG_,AI_AVHV_,AI_PPPG_, AI_PPHV_,AI_PGHV_,AI_AVPPP,AI_AVPPH,AI_PPPGH,AI_FL_EC,BD_bctc, CD__bctc,BD_dumla,CD_dumla,BD_count,CD_count,BD_yrsr,CD_yrsr,BD_indid, CD_indid,BD_grpid,CD_grpid,BD_notid,CD_notid,BD_erscb,CD_erscb,BD_ersnp, CD_ersnp,BD_ersnw,CD_ersnw,BD_ersse,CD__ersse,BD_erssp,CD_erssp; Pds=4;PrintVC;Effects:;Means:;Matrix;Crosstab;Prob=prMN5$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $RPL Not Correlated $RPL MODEL (PD & Demos & 13/14 AI):RANDOM PARMS ARE NOT CORRELATED NLOGIT;th=DECUSE;Choices=1,2,3; Rhs=PD_prem,PD_disc,Cdum,Bdum,ME_PI_EC,ME__PN_EC,AI_PP_EC,AI_PG_EC, AI_HV_EC,AI_AVPP_,AI_AVPG_,AI_AVHV_,AI_PPPG_,AI_PPHV_,AI_PGHV__, AI_AVPPP,AI_AVPPH,AI_PPPGH,AI_FL_EC,BD_bctc,CD_bctc,BD_dum1a, CD_dumla,BD_count,CD_count,BD_yrsr,CD_yrsr,BD_indid,CD_indid,BD_grpid, CD_grpid,BD_notid,CD_notid; RPL;Pts=250;Parameters; Fcn=Cdum(N),Bdum(N); PrintVC;Effects:;halton;Means;Maxit=100;Pds=4;Matrix;Crosstab;Prob=erP5nc$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 196 $RPL Correlated $RPL MODEL (PD & Demos & ERS Regions & 13/14 AI):RANDOM PARMS ARE CORRELATED W/ DEMOS NLOGIT;th=DECUSE;Choices=1,2,3; Rhs=PD,Cdum,Bdum,ME_PI_EC,ME_PN_EC,AI_PP_EC,AI_PG_EC,AI_HV_EC, AI_AVPP_,AI_AVPG_,AI_AVHV_,AI_PPPG__,AI_PPHV_,AI_PGHV_,AI_AVPPP, AI_AVPPH,AI_PPPGH,AI_FL_EC,BD_bctc,CD_bctc,BD_dumla,CD_dumla,BD_count, CD__count,BD_yrsr,CD_yrsr,BD_indid,CD_indid,BD__grpid,CD_grpid,BD_notid, CD_notid,BD_erscb,CD_erscb,BD_ersnp,CD_ersnp,BD_ersnw,CD_ersnw,BD_ersse, CD_ersse,BD_erssp,CD_erssp; RPL;Pts=250;Cor;Parameters; F cn=Cdum(N ),Bdum(N); PrintVC;Effects:;halton;Means;Maxit=100;Pds=4;Matrix;Crosstab;Prob=erP5c$ $$$$$$8$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $LCM $LCM MODEL (PD & Demos & 9/10 AI): 3 SEGMENTS: $NO SEGEMENT EXPLAININ G VARIABLES INCLUDED NLOGIT;th=DECUSE;Choices=l ,2,3; Rhs=PD,Cdum,Bdum,ME_PI_EC,ME_PN_EC,AI9PP_EC,AI9PG_EC,AI9HV_EC, AI9AVPP_,AI9AVPG_,AI9AVHV_,A19PPPG_,AI9PPHV_,AI9PGHV_; LCM=one,bctc,dumla,countfo,yrsr,indv_id,group_id,no_ot_id; Pts=3;Parameters;Pds=4;Matrix;Crosstab;Prob=prLC2a$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $Summary Statistics (mean) Used for LCM Willingness-to-Accept Estimates $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ DSTAT;Rhs=bctc,dumla,countfo,yrsr,indv_id,group_id,no_ot_id,erscb,ersnp,ersnwa, erssea,erssp$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 197 REFERENCES 198 REFERENCES Adamowicz, W., R. 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