Abstract
In a study of schedule-induced polydipsia in rats, water was not made available within the operant chamber until magazine and barpress training and adaptation to the intermittent schedule were completed. A gradual development of schedule-induced drinking without corresponding changes in barpressing behavior was seen. In a second experiment, rats differing in the number of barpresses emitted on two temporally similar fixed-interval schedules did not differ significantly in volumes of water consumed during interpellet intervals. Both studies demonstrate the independence of barpressing and schedule-induced drinking.
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