| Abstract: One might say that the treatment that launched applied behavior analysis began with a commitment to help little Dicky, a 3 ½ year old boy with autism (Wolf, Risley & Mees, 1964). The treatment was an amazing story of a successful marriage of science and clinical wisdom. Now, over 50 years later, it is evident that applied behavior analysis has both expanded and shrunk. Expansion is seen in the 2018 Annual Report of the Behavior Analysis Certification Board: 35,286 professionals certified to practice behavior analysis and 51,507 technicians registered to assist them. Most of the recipients of these practices are children and adults with autism and developmental disabilities. Among the costs of taking behavior analysis to scale has been the shrinking of what it means to be an applied behavior analyst. Both science and clinical wisdom seem to have moved to the margins and other considerations have taken center stage. We will examine some of the changes that appear to have occurred, including ossification of protocols, training and supervision in decontextualized environments, and a focus on structural rather than functional approaches to treatment. We will also examine what appears to be a misunderstanding or misapplication of what constitutes evidence-based practice. Finally, we will consider contingencies at work in the current culture that may account for many of these changes; and we will offer some observations on how the field might recapture what has been lost as it continues moving forward. |