The effectiveness of training procedures which used visual-visual arbitrary matching, blocked-trial matching-to-sample, and successive discrimination training to teach visual-visual discrimination of two-dimensional forms was evaluated with two men having severe mental retardation. Results indicated that the procedures did establish conditional…

Presents study results examining social pressure within sexually homogenous groups. Explains that cohesiveness, based on common beliefs, was established in half of the sample while prevented in the remainder. Reports that groups were required to reach consensus after conflict was introduced. Concludes that low cohesion groups showed the greatest…

The effects of a variable-ratio schedule of reinforcement on pedaling a stationary exercise bicycle were examined with 3 obese and 3 nonobese 11-year-old boys over a 12-week period. The intervention resulted in systematic increases in rate of exercise for all subjects. (Author/DB)

Generalization across three stimulus parameters (therapist, setting, and demands) was examined for five men with severe/profound mental retardation whose self-injurious behavior was maintained by escape from task demands. Variables were held constant during the escape extinction treatment. Full or partial generalization to novel situations was…

This study, with an 11-year-old male with severe mental retardation, investigated the effectiveness of selectively implementing punishment for only the most severe topographies of aggression and property destruction, whereas less extreme behaviors were ignored. Results indicated that severe behaviors were reduced to near-zero levels only when both…

Compares the reactions of mothers of 6- to 11-year-old conduct-disordered boys with those of mothers of normal boys, matched for age and education of mother, in situations whereby each mother interacted with her own child, with a child not her own of like classification, and with a child not her own of different classification. (HOD)

Mathematically precocious adolescents were studied in order to identify sex differences in self-concept/self-esteem which exist at a stage when intellectual differences are emerging. Subjects were 166 males and 68 females, ages 12-15 years, enrolled in a summer residential program for talented youth. Mean SATM scores for the experimental…

Presents results of study of British elementary school boys aged seven to nine, comparing disruptive behavior to heart rate. Distinguishes this study from earlier ones that found relationship between low base heart rates and low reactivity to mild stress among high school boys. Reports that this study disproves prediction that results would be…