The Influence of Upcoming Food-Pellet Delivery on Subjects’ Responding for 1% Sucrose Reinforcement Delivered by Concurrent Random-Interval Schedules

Researchers have demonstrated that rats’ rates of operant responding that are maintained by 1% liquid-sucrose reinforcement will increase if food-pellet reinforcement is upcoming within the same session. The authors investigated whether a similar induction effect would be observed when rats pressed a lever for 1% sucrose that was delivered by concurrent random-interval schedules of reinforcement. […]