Resistance to extinction as a function of the presentation of a motivating cue in the startbox.

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Abstract
Rats were trained to make an instrumental response (head poke) to obtain food; a buzzer was paired with presentation of food for experimental Ss but presented separately from the food for the controls. Then Ss were trained in a straight runway for food, and finally extinguished in the runway. During extinction the buzzer was sounded on some of the trials while S was in the startbox. Starting times on the buzzer trials were faster for the experimental Ss than the controls, and resistance to extinction was greater for the experimental group. These results are interpreted as supporting "an interpretation of extinction in terms of instrumental motivating factors." From Psyc Abstracts 36:02:2EM07M. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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