The present comments concern Michael's concept of motivative variables, and the implications of that concept for our understanding of the nature of reinforcement as well as the extinction of responses maintained through positive and negative reinforcement. We note that both extinction and altering motivative variables decrease responding, but…

With recent advances in the behavioral treatment of depression and growing dissatisfaction with medical and cognitive interventions, a resurgence of interest in behavior analytic treatment of depression has occurred. Currently, several behavioral and cognitive behavioral models of depression exist. In reviewing these models, certain agreed upon…

When responses function to produce the same reinforcer, a response class exists. Researchers have examined response classes in applied settings; however, the challenges associated with conducting applied research on response class development have recently necessitated the development of an analogue response class model. To date, little research…

The present study attempted to duplicate earlier findings and to investigate the effects of mechanical as well as personal reinforcement. However, the acquisition and extinction differences between oral and anal scoring types reported in the earlier studies were not obtained with either personal or mechanical reinforcement. (Author)

Article reviews evidence on the effects of contrast and matching, that these effects are related, and that both effects are reactions to the same independent variable. (Author/RK)

This paper reviews the functional properties and procedural variations of differential reinforcement for the reduction of behavior disorders in individuals with developmental disabilities. The paper proposes that limited success may be a result of the arbitrary relationship that exists between reinforcers and target behaviors when behavioral…

The article suggests that retarded behavior is maintained by certain events in the environment and their relationship to an individual's behavior. Maintenance of these behaviors is attributed to positive reinforcement, avoidance behavior, and contingency schedules. Several examples of the maintenance effects of each of these paradigms are given.…

Two studies involving five students (ages 9-17) with autism found that stereotypy was multiply determined or occurred across all assessment conditions (attention, demand, no-attention, and recreation conditions) and that the presumed association between response topography and behavioral function may be less important than previously realized.…

Research has found that individuals present themselves in a self-enhancing fashion when audiences lack information that could contradict their claims. To examine reactions to evaluations and the potential interplay between the valence of the evaluation, the public versus private nature of the response, and the audience to whom a public response is…