When behavior suggests that the value of a reinforcer depends inversely on the value of the events that precede or follow it, the behavior has been described as a "contrast" effect. Three major forms of contrast have been studied: "incentive contrast," in which a downward (or upward) shift in the magnitude of reinforcement produces a relatively…

The authors review the literature on the 2 main models of the placebo effect: expectancy theory and classical conditioning. A path is suggested to dissolving the theoretical impasse that has long plagued this issue. The key is to make a clear distinction between 2 questions: What factors shape placebo effects? and What learning mediates the…

Reviews behavioral and psychological concepts currently applied to the assessment and treatment of chronic pain syndromes, including operant conditioning and psychophysiologic concepts such as the stress-pain hypothesis, the pain-muscle spasm-pain cycle, and the neuromuscular pain model. Discusses relaxation and biofeedback training and concepts…

Extensive review of the literature suggests that modeling procedures are effective means of changing behavior, not only with one client but with a group. School counselors, in particular, need to be aware of the negative effect of various grouping policies, and should expose behavior problem clients to socially acceptable models. Followed by…

Comments on article by Ray E. Hosford in same issue. Presents several brief case accounts to indicate that behaviorists' explanations of techniques often do not do justice to their practice, suggesting advisability of doing as behaviorists do, not as they say. (Author/CJ)