Level of training and goal-box movements as parameters of the partial reinforcement effect


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Abstract

A continuous reinforcement group and 2 50% reinforcement groups of rats were trained in a runway. Subgroups had 3, 9, or 12 days of training at 20 trials per day. One of the 50% groups had dual feeding situations to increase the variety of goal-box movements. 20 extinction trials per day were given up to a maximum of 11 days. Acquisition appeared to be influenced by the variety of goal-box movements. The partial reinforcement effect (PRE) did not appear to be influenced by movements per se. The frequently reported superiority of PRE groups in resisting extinction increased with extended training. An hypothesis as to the possible role of conditioned inhibition in PRE was not supported. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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