Conditioned inhibition in flavour aversion learning : odor as a conditioned inhibitor

Taukulis, Harald K. (1973) Conditioned inhibition in flavour aversion learning : odor as a conditioned inhibitor. Masters thesis, Memorial University of Newfoundland.

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    Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
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Abstract

Two experiments were performed which demonstrated that an olfactory stimulus can become associated with toxicosis over long CS-US delays and, more importantly, that an olfactory stimulus can become a conditioned inhibitor in a feeding situation. In Experiment 1, hooded rats were allowed to drink water while a stream of amyl acetate vapour was directed towards the end of the drinking spout. Toxicosis was then induced via the injection of lithium chloride after delays of 0, 0.5, 1, 4, and 12 hours for different groups. When compared with no-toxicosis controls, it was found that significant aversions were obtained for all groups except the 12 hr delay group. In Experiment 2, hooded rats were given conditioned inhibition training in which the taste of saccharin alone was always followed by induced illness, but the taste of saccharin plus the odor of amyl acetate was not. In a series of three subsequent tests - summation, enhancement of conditioning, and retardation - it was demonstrated that the odor had acquired active inhibitory properties. The results paralleled those obtained with more traditionally studied stimuli and techniques and hence were found to be readily predictable from a recent model of conditioning set forth by Rescorla & Wagner (1972).

Item Type: Thesis (Masters)
URI: http://research.library.mun.ca/id/eprint/7779
Item ID: 7779
Additional Information: Bibliography: leaves 37-40.
Department(s): Humanities and Social Sciences, Faculty of > Psychology
Science, Faculty of > Psychology
Date: 1973
Date Type: Submission
Library of Congress Subject Heading: Aversive stimuli; Odors

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