Group play therapy and tangible reinforcers used to modify the behavior of 8-yr-old boys

Eleven third-grade boys were randomly assigned to three play therapy groups. The boys had been referred by their teachers because of shy, withdrawn behavior. The Token Group met in a play group (4 Ss), had a therapist, and received tangible reinforcements for social approach behavior. The Verbal Group (4 Ss) was treated similarly to the Token Group except that no tangible reinforcements were used. The Control Group (3 Ss) met in a play group without a therapist present. Fourteen play sessions were held for each group. The Token Group changed more than the Verbal Group; the Verbal Group changed more than the Control Group; the Control Group showed no change on the objective measures used. The Token Group exhibited an increase in social approach behavior and a decrease in discrete, problem behavior. The Verbal Group increased slightly in social approach behavior. All groups failed to demonstrate changes in “productivity”, “anxiety” and “general psychological adjustment”.