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Science 17 May 1963:
Vol. 140. no. 3568, pp. 808 - 809
DOI: 10.1126/science.140.3568.808
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Articles

Preference Aversion in Mice to Bitter Substance

Roslyn P. Warren 1

1 Shimer College, Mount Carroll, Illinois

Preference-aversion functions demonstrable for sweet and salty stimuli have been found for a "bitter" substance, sucrose octaacetate, at individually specific concentrations for mice. The data support Schneirla's views correlating stimulus magnitudes and approach-withdrawal. The positive reinforcing value of this bitter substance as a weak stimulus is diminished with continuous exposure and no secondary reinforcement. Avoidance is related to intensity of stimulation rather than modality or postingestion effects.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)