Tests of sensory pre-conditioning with human subjects.

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Abstract
Equipment suitable for testing sensory pre-conditioning in human subjects is described. The front panel of the apparatus provided for the interchange of a loud speaker and a milk glass plate so that a light or a tone could be employed in pre-conditioning trials. 40 men and 40 women subjects were divided into 4 groups. Group I was employed for sensory pre-conditioning; Group II served as control for sensory generalization; Group III served as control for the pairing of the tone and the light; Group IV served as control for the validity of the extinction series of the other 3 groups. The galvanic skin response was employed as index response, and means were computed for magnitude, latency, and frequency of response. The fact that sensory pre-conditioning failed to be demonstrated in these experiments, although this phenomenon was reported in earlier conditioning experiments with dogs, is believed to be a function of certain differences in the two experiments. Sensory generalization is asserted adequately to account for the behavior of subjects in these experiments. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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