Adjunctive drinking during variable and random-interval food reinforcement schedules |
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| Authors: | J R Millenson Robert B Allen Steven Pinker |
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| Institution: | 1. McGill University, Montreal, Quebec, Canada
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| Abstract: | Rats were trained to leverpress for food and subsequently exposed to either arithmetic series or random variable-interval reinforcement schedules. Adjunctive drinking developed in all subjects exposed to arithmetic variable-interval reinforcement, but did not develop in six of the eight animals trained on the random schedule. The results suggest that adjunctive drinking is the result of an interaction between the tendency of rats to drink after eating and the ability of locally low probabilities of reinforcement within schedules to induce conditioned behavioral states. |
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