In the 25 years since the publication of the article reprinted in this issue of "Behavioral Disorders", a tremendous amount of research and opinion has been published on the topics of functional analysis, functional assessment, and assessment-based interventions. In this commentary, we reflect on the context in which our original work…

In the past two decades, positive behavior support (PBS) has emerged from applied behavior analysis (ABA) as a newly fashioned approach to problems of behavioral adaptation. ABA was established in the 1960s as a science in which learning principles are systematically applied to produce socially important changes in behavior, whereas PBS was…

This article discusses the contributions of applied behavior analysis (ABA) in effective instruction of students with autism spectrum disorders. Emphasis is on the use of antecedent interventions and curriculum-based assessment. It also notes that the principles and methods of ABA are being integrated into routine educational procedures, including…