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…

Compares the reactions of mothers of 6- to 11-year-old conduct-disordered boys with those of mothers of normal boys, matched for age and education of mother, in situations whereby each mother interacted with her own child, with a child not her own of like classification, and with a child not her own of different classification. (HOD)

This study evaluated self-control and impulsivity in two nine-year- old males with severe developmental disabilities and behavior disorders. Functional analyses suggested that aggression was reinforced by food access. A differential reinforcement procedure to reinforce appropriate mands was implemented. Although aggression occurred when it…