The effects of magnitude of water reward on selective learning and habit reversal.

Abstract
9 groups of rats were run in a 3 X 3 design with varying level of water incentive in acquisition of a T-maze habit and its reversal. During both acquisition and reversal, amount of current incentive was related inversely to errors and directly to asymptotic running speed. A significant interaction between incentive in acquisition and in reversal was interpreted as due to the operation of positive contrast effects. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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