The delivery of food contingent on 10 s of consecutive toy engagement resulted in a decrease in engagement and a corresponding increase in other responses that had been previously reinforced with food. Similar effects were not observed when tokens exchangeable for the same food were delivered, suggesting that engagement was disrupted by the…

Two experiments examined the effectiveness of a peer-monitored token system on reducing disruption and nonparticipation during a transition period of a kinderagarten class for behaviorally impaired children. Results suggested that both teacher-and peer-monitored interventions were successful in decreasing disruption and increasing participation of…

This case study presents a 9-year-old boy who exhibited severe stereotypic self-injurious behavior. An escalating differential-reinforcement-of-other-behavior schedule, mediated through token reinforcement, eliminated self-injurious behavior quickly for up to 30-minute periods, and was more effective than social reinforcement. Crying behavior…