The concept of the motivating operation (MO) has been subject to 3 criticisms: (a) the terms and concepts employed do not always overlap with traditional behavior-analytic verbal practices; (b) the dual nature of the MO is unclear; and (c) there is a lack of adequate contact with empirical data. We offer a more parsimonious approach to motivation,…

Analog baselines are an experimental methodology for identifying the functions of maladaptive behavior of individuals with developmental disabilities in naturally occurring environments. This article identifies potential limitations of this methodology, including: fidelity of baseline design conditions, a narrow analysis of behavior, and limited…

Self-injurious behavior is a serious concern for individuals who must provide educational services to developmentally disabled children. This article discusses research related to the motivation of self-injury; provides guidelines for designing treatment programs for self-injurious behavior; and introduces a new nonaversive treatment, differential…