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Updated: Feb 13, 2026

A Treatment Package without Escape Extinction to Address Food Selectivity
Published on: August 21, 2015
Effects of extinction of a nontarget CS on performance to a target CS
Rachel A Richardson1, Paige N Michener1, Todd R Schachtman1
1Department of Psychological Sciences, University of Missouri, 210 McAlester Hall, MO 65211, Columbia.
Abstract:
When a target conditioned stimulus (CS A) is paired with an unconditioned stimulus in the presence of a second, conditioned stimulus (CS B) during compound conditioning trials, the associative strength of CS B can influence the magnitude of the conditioned response (CR) to CS A. For example, extinction of the competing, nontarget CS B can influence the CR to CS A. An enhancement of the CR to the target CS A due to extinction of the nontarget CS B after compound conditioning is sometimes referred to as "recovery from overshadowing" - a type of retrospective revaluation. The present experiments examined retrospective revaluation effects using a conditioned taste aversion procedure. The experiments obtained an effect on the CR to CS A following extinction of CS B. The results are discussed with respect to the comparator hypothesis, within-compound associations, and retrieval as well as other relationships between the target CS and nontarget CS.
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