The Premack principle in human experimental and applied settings

Studies claiming support for the Premack Principle in human experimental and applied settings are reviewed in terms of the standard test conditions associated with the Principle and in terms of the Principle's conceptual constrains. Little definitive evidence was found to support the claim that a high probability response will reinforce a lower probability response, nor was the converse contention supported, that a low probability response will act as a punisher for a high probability response. More importantly, among the reports reviewed there was no evidence for the reversibility of the reinforcement relationship.     

“Snowball” and other control groups

In the Spring of 1973, the Office of Research and Development of the Appalachian Center, West Virginia University, began an evaluation of the University's mining extension program. Since all interested miners are allowed to enroll in the course, the only feasible way to obtain a control group was to use the “snowball process.” This paper examines how well the snowball process did in producing a control group which matched the trainees. While the trainees and controls seemed well matched on many demographic characteristics they differed on several variables, particularly attitudes.     

Assertive training versus rehearsal and the importance of making an assertive response

This study dealt with whether mere practice would enhance assertion, and whether assertive training would reduce negative effect in simulated target situations, even when subjects (Ss) made no overt response. Males reporting difficulty with authority figures received either rehearsal alone or the complete assertive training package; in a subsequent behavioral test half in each group were told to make a response, with the remainder instructed to remain silent. Objective ratings revealed marked improvement following assertive training, while the effects of practice alone were negligible. For Ss receiving assertive training, reduction in selfreported negative affect in the target situations appeared to be independent of whether or not they engaged in overt verbalization, suggesting that assertive training, per se may enhance feelings of well-being.     

The effects of commercial interruption of violent and nonviolent films on viewers' subsequent aggression

Aggressive responses following the viewing of violent and nonviolent films were studied. Groups of subjects saw one of three full-length films: (1) a staged violent film, (2) a realistic violent film, or (3) a nonviolent film. For half of the groups of subjects, films were interrupted periodically by sets of commercials. Results confirmed predictions that aggressive responses will be greater after viewing aggressive films than nonaggressive films, and that aggressive responses will be greater if films are interrupted by commercials than when not interrupted. A hypothesis predicting an interaction such that aggressive responses will be maximal when violent films are interrupted by commercials was supported. No differences in aggressiveness following presentation of realistic and staged violent films were found.     

Reinforcers and vocational maturity in occupational aspiration,expectation, and goal deflection

When vocational aspirations and expectations are not the same, this difference is termed occupational goal deflection. The present study was designed to investigate the notion that such aspirations, expectations, and goal deflection are related to an individual's vocational maturity, education, and job reinforcers. The subjects were 149 vocational rehabilitation clients and 51 graduate students. Analyses of variance yielded findings that more vocationally mature individuals tend to display greater vocational aspiration, greater vocational expectation, and less goal deflection. Similarily, subjects who value such job characteristics as “getting a feeling of accomplishment, fair company policies, trying out their own ideas, doing work without feeling it is morally wrong, making their own decisions, (and) planning work with little supervision” tend to have higher aspirations and expectations, but lower goal deflection.     

Stimulus control of responding by response-reinforcer temporal contiguity

The stimulus properties of brief disruptions in response-reinforcer temporal contiguity were investigated using a discrete trial conditional discrimination procedure. Key pecking (nondelay) or key pecking followed by a brief interval of nonpecking (delay) in the sample component produced a stimulus change (choice component). Pecks in the choice component to one of two alternatives resulted in food or blackout, conditional upon which response requirement was met in producing the choice component. A baseline condition, in which key pecking always produced the choice component and correct choices were arranged randomly, alternated with experimental conditions that included nondelay and delay values of either 0.2, 0.5, or 1.0 sec between the last key peck and the initiation of the choice component. All subjects accurately discriminated brief temporal delays between a response and stimulus change, with choice accuracy increasing for three of four subjects as the temporal disruption in contiguity increase. Implications of the research for the study of delayed reinforcement, response-independent reinforcement, and the discrimination of causality are discussed.     

Social skills: A review of cognitive-behavioral training procedures with children

Thirty-one studies utilizing cognitive-behavioral procedures to train social skills were reviewed. The review was organized around six methodological issues: (a) age of subjects; (b) training procedures; (c) outcome measures; (d) research design; (e) evidence for generalization; and (f) social validation. Suggestions for future applied research are discussed, such as investigations regarding developmental changes in socially skilled behavior, increased use of multiple dependent measures, more intensive programming for generalization, and the establishment of the social importance of the effects of social skills training programs.