RESISTANCE TO EXTINCTION IN CLASSICAL GSR CONDITIONING AS A FUNCTION OF ACQUISITION TRIALS BEYOND PEAK CR SIZE

Seventy-two Ss were randomly divided into six groups, five for classical delayed GSR conditioning and one an unpaired control The conditioning groups received either 1, 2, 4, 8, or 16 paired trials after the peak CR and the controls were matched to Group 16 in number of CSs and UCSs received unpaired. The CS was a 1000-cps pure tone and the UCS a shock to the forearm, with a 5-sec CS-UCS interval. An inverse relationship between resistance to extinction and number of postpeak conditioning trials was found for both trials and magnitude data, except for Group 1. It was concluded that inhibition of delay combines with extinctive inhibition to hasten extinction and that the two types of inhibition may be identical. © 1969, Psychonomic Journals, Inc.. All rights reserved.