The effect of a feeding procedure on persistent avoidance responses in rats

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After establishing an avoidance response in rats 100 extinction training trials were given under the following conditions: Groups 1 and 2 were fed in the presence of the CS, Group 1 had previously been fed in the apparatus, Group 2 had not; Group 3 was detained with the CS but not given food; and Group 4 was run under a standard extinction procedure. All groups were then given 50 standard extinction trials. At first Group 1 “showed significantly longer latencies of the avoidance response” and Group 2 “showed a similar effect to a lesser extent. However, at the end of the experiment, no significant differences between the groups remained, and latencies had not changed appreciably from the end of the shock trials to the end of the experiment.” From Psyc Abstracts 36:01:1EK06S. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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