Modification of Delinquent Behavior1

A matched subjects design was employed to assess the effectiveness of an experimental program for the reduction of delinquent behavior in adolescent boys on probation. Youngsters in the experimental group (N= 19) were invited to participate in a series of small group sessions designed on the basis of principles drawn from the theory and research of social psychology. Control group delinquents (N= 19) were not informed of this project and continued their previous association with the probation office. The group experiences arranged for the experimental participants encouraged free and open discussion of their previous delinquent activities, future behavioral intentions, personal values, and life goals. It was found that participants developed high attraction toward the group and involvement in its activities. Frequency of subsequent delinquent behavior was found to be significantly reduced for experimental group participants as compared with their matched controls. In a followup interview 9 months after the last group meeting, it was found that experimental group members showed significantly more internal responses on a modified version of the Rotter I-E scale than did the control subjects.