Abstract
Abstract Three experiments in which rats learned an active avoidance response and were then confined for a brief period in the shock chamber (response prevention) prior to extinction testing are presented. Control groups of rats were confined for equal time periods in other locations. Response prevention reliably facilitated extinction. Groups confined in novel or fear-eliciting locations also showed facilitated extinction, but groups confined in familiar locations did not. Results are discussed in relation to fear-reduction, competing-response, and species-specific-defense-reaction (SSDR) explanations for the effect of response prevention, and are shown to be most consistent with the SSDR hypothesis.
Published Version
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