"In this study we replicated the procedures of DeLeon, Iwata, and Roscoe's 1994 study which examined the extent of which edible stimuli displaced leisure stimuli in a preference assessment. Participants took part in three separate multiple stimulus without replacement (MSWO) preference assessments. One preference assessment contained all leisure stimuli, another all edible stimuli, and a final preference assessment that contained the top selected stimuli from the edible and leisure assessments. Their study found that 12 of the 14 participants selected edible stimuli over leisure stimuli in a combined preference assessment. Another recent study, Conine and Vollmer (2019) found similar results. However, our findings were different. Our results indicated that 11 participants selected edible stimuli as their most preferred stimulus and 14 selected leisure as their most preferred stimulus. This study also evaluated the effects of preference displacement in a combined preference assessment. The implication of our results suggest that preference is based on the individual and may be influenced by age, setting, and disability."--Page ii.
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