This paper analyzes development of group structure in terms of the stimulus-sampling perspective. Learning is the continual sampling of possibilities, with those reinforced possibilities increasing in probability of occurance. This contingency learning approach is tested experimentally. (NG)

This study examines a group's response to deviance and the connection between the group members' covert evaluations of the behavior and the overt sanctions imposed upon the deviant. (Author/YRJ)

Examines some of the conditions associated with dissolution of the friendship tie. Subjects were 232 boys and girls between the ages of eight and 15 at a summer camp. The hypothesis that reduction in social interaction would be associated with increased probability of dissolution was not conclusively supported. (Author/HMV)