"Evidence-based interventions for young children with autism spectrum disorder (ASD) share theoretical origins in developmental and behavioral theories, and have been acknowledged to share key strategies (Schreibman et al., 2015). However, the extent to which these interventions share strategies has not been examined in research to date. In addition, there is no standardized measure for assessing intervention implementation that was developed for use across different interventions. This paper presents two studies, the first of which had the goal of developing a comprehensive taxonomy of strategies of caregiver-mediated NDBI and refining an observational rating scheme using quantitative feedback from experts. Twenty strategies comprised the comprehensive taxonomy, 11 of which were determined to be common elements using quantitative methods. From these items, an 8-item observational rating scheme, the NDBIFi, was developed. The goal of study two was to establish preliminary reliability and validity of the NDBI-Fi, by rating caregiver-child interaction videos from various completed intervention trials. Results lend support to the utility of the NDBI-Fi as a measure of caregiver use of intervention strategies across NDBI models."--Page ii.
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