The article discusses the applied and clinical importance of the relationship between verbalizations and relevant behavior (i.e., between what people say and what they do). The analysis of verbal regulation in correspondence training has the theoretical complexity and sufficiency of the operant analysis of antecedents, behaviors, and consequences.…

Reviews laboratory research on behavioral momentum conducted with pigeons and summarizes its findings and their generality to people, including those with mental retardation. Discusses the high-probability procedure used to establish compliance in clinical settings and based in part on an extension of the momentum metaphor. (CR)