INFLUENCE OF INSTRUCTIONAL SET ON HABITUATION OF ORIENTING RESPONSES AS MEASURED BY GALVANIC SKIN RESPONSE, PULSE VOLUME, AND BLOOD VOLUME.
INDIANA UNIV BLOOMINGTON DEPT OF PSYCHOLOGY
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Instructional set was utilized to produce different arousal levels in two groups, the lower one of which replicated the conditions of an experiment testing and confirming 5 hypotheses derived from Sokolovs neuronal model of habituation of the orienting response. A tone series of standard stimuli SS and test stiumli TS was delivered through earphones and galvanic skin response GSR, pulse volume PV, and blood volume BV were measured. Only one of the hypotheses of the replication was confirmed. The higher arousal group tended to reverse the predicted direction of the hypotheses. Results were compatible with intensity-magnitude relations and stimulus generalization gradient and not congruent with the neuronal model. Author