This report describes two studies in which 48 male college students and 144 male high school students, respectively, were assigned to high or low spatial density conditions and instructed to construct, as a team, an erector set model within a 40-minute period. High school students were assigned to high, middle, and low attraction groups on the…

The results of this study suggest a practical alternative to increase the effectiveness of discipline in the home and school. Parents and teacher might well rehearse (reinstate) with the child the transgression sequence just prior to the discipline. (Author)

This paper is based on a PhD dissertation submitted to the Department of Psychology, University of California, Los Angeles. Research supported in part by the U.S. Public Health Service.

The effects of two interdependent group contingencies, group-average and group-individual, on math performance and verbal interaction were investigated. In a group-average contingency the average performance of the members of the group must meet a set criterion level. In a group-individual contingency each member of the group must meet a set…