Delay and fixation.

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Abstract
Rats were given 60 trials of training to food on their preferred side in a Y maze; on the last 20 days half the Ss received shock in the start box and along the maze stem. Reward was then placed in the other goal box. and rats run to criterion; ½ of each group was delayed for 30 sec. just before the choice-point. Shock produced fixated behavior. Delay facilitated reversal, particularly among the shocked rats, in accord with the suggestion that more than 1 instrumental act might be involved in problems producing fixated behavior, and that delimitation of each facilitates solution. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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