Behavior modification of aggressive behavior on a nursery school bus: A case study

A case study is presented in which aggressive behavior of two preschool boys on a nursery school bus was modified by the introduction of a negative punishment contingency in which the Ss were told they would be detained on the bus until the second time the bus passed their house (delay of reinforcement) if abusive behavior occurred. The practical implications of the study and the relative merits of choosing negative punishment over positive punishment as therapy with children are discussed.