Abstract
Comparison of the effects of environmental enrichment (EC) and impoverishment (IC) on learning in the rat is hindered by difficulty in distinguishing, experimentally, EC/IC differences in learning capacity per se from differences in performance-related variables such as sensory or motor ability, activity and motivation. Experiments are described which analyse EC/IC performance differences in a simple lever-press training procedure. In particular the hypothesis that EC and IC rats may be differentially reinforced by the same response-contingent events is examined. The data firmly support this hypothesis and possible explanations of the differential reinforcement effect are examined.
Published Version
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