Positive Behavior Supports (PBS) experts were surveyed to examine their perceptions of the treatment acceptability of commonly used decelerative consequence-based behavioral procedures. Findings illuminate the paradigm shifts that have occurred over the course of the careers of PBS experts and the factors that have contributed to these personal paradigm shifts. Many of the decelerative consequence-based procedures once used by respondents are no longer perceived by them to be acceptable. A small percentage of experts indicated that they still might use the full range of decelerative techniques under certain circumstances. The need for more training and ideological change were perceived to be the greatest challenges currently facing the field. Experts also indicated that involvement in PBS has broadened their understanding of applied behavior analysis, the function of behavior, antecedents, quality of life, and self-determination issues facing people with disabilities. The implications of the findings for current and future PBS researchers and practitioners are discussed. (Contains 8 tables and 4 figures.)