Head Start children were matched into two groups on the basis of disruptive behavior during rest periods. Attempts were made to modify their behavior using either instructions or token reinforcement procedures. Results suggest that a combination of reinforcement together with instructions is much more effective than either of these alone. (Author)

The effect of feedback on group cohesiveness (measured in terms of group and task attractiveness) for a person who is performing a simple, highly repetitive task was studied. One hundred business administration students, randomly assigned to five member groups, completed a series of trials having the goal of determining the number commonly held by…

Recent investigations of the effects on group output of competitive contingencies, reward deliveries to group members contingent upon achieving a higher or lower task rate than another group, have suggested that competitive contingencies are a positive function of group output. When rewards are contingent upon a higher comparison outcome, group…

An effort was made to assess the relative effectiveness of different reinforcement systems versus traditional teaching with maladjusted boys. The subjects were 60 boys in grades 6 and 7 who participated during language arts classes, but total data were gathered on 26 boys. The boys had histories of aggressive behavior and language problems.…