Reinforcement of ethanol consumption in rats by an increase in the frequency of food-pellet delivery
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TL;DR
An increase in the frequency of food-pellet delivery to four food-deprived rats was made contingent upon drinking either distilled water or a 9% (v/v) ethanol solution and acted as a positive reinforcer for drinking that liquid associated with the greater pellet frequency.
Abstract
An increase in the frequency of food-pellet delivery to four food-deprived rats was made contingent upon drinking either distilled water or a 9% (v/v) ethanol solution. In spite of the contingency of a minimum interval of 3 sec between drinking the reinforced liquid and pellet delivery, an increase in the frequency of pellet delivery from one per 120 sec to one per 15 sec on the average acted as a positive reinforcer for drinking that liquid associated with the greater pellet frequency.