Response termination of the cue stimulus in classical and instrumental conditioning.

Abstract
This experiment was conducted in order to determine the effect of time of termination of the CS on the efficacy of finger conditioning. Both classical and instrumental avoidance-conditioning situations were employed. Within each of these situations the CS was terminated by the response for half the Ss, and for the other half it continued for 450 msec. after onset of shock. For all groups the tone preceded shock by 450 msec. Statistically significant support for a superiority in rate of learning was found in the response terminated group in instrumental conditioning but was not found in the classical-conditioning group. The significance of this type of exptl. design with reference to Mowrer''s and Guthrie''s theories was considered.
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