No abstract

Competing responses emitted after Ss reached the foodcup were observed in a straight runway as a function of 100% or 50% reinforcement, 1· or 20'pellet rewards, ~d 6 or 21 % h of deprivation. During acquisition and extinction, large rewards mcreased postgoal competing responses, but higher deprivation suppressed these responses. Partially reinforced Ss produced more postgoal competing responses during extinction than did consistently reinforced Ss. When Ss were trained on a 50% schedule, postgoal competing responses were positively related to runway performance. This relationship was negative for Ss trained on a 100% schedule.