Title

The Effects of CS−Preexposure in Conditioned Taste Aversion: Enhanced Flavor Discrimination

Publication Title

Learning and Motivation

Publication Date

5-1997

Document Type

Article

DOI

10.1006/lmot.1996.0967

Keywords

CS-preexposure, conditioned taste aversion, flavor discrimination

Disciplines

Psychology

Abstract

Discrimination between two similar flavors in a conditioned taste aversion situation is generally difficult to establish due to generalization of aversion from conditioned stimuli to stimuli not paired with illness. The findings of experiment 1 demonstrate that this general difficulty may be overcome by preexposing subjects to a similar but non-target flavor prior to conditioning (the CSEffect). Experiment 2 provided evidence that even limited experience with the CS(one preexposure prior to conditioning) is sufficient to facilitate stimulus discrimination. Investigations of delay interval effects indicated that the CSEffect is maintained when 14 days are inserted between conditioning and test (experiment 3) and when 10 days are inserted between preexposure and conditioning (experiment 4). An alternate interpretation of these results in terms of relative novelty of stimuli is discussed.

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