PAVLOVIAN CONDITIONED FEAR IN SIDMAN AVOIDANCE LEARNING

DOGS TRAINED TO AVOID SHOCK ON A SIDMAN SCHEDULE RECEIVED TRACE PAVLOVIAN FEAR CONDITIONING WITH AN EXTENDED CS-UCS INTERVAL. PRESENTATION OF THE CS DURING AVOIDANCE PRODUCED IMMEDIATE RATE DEPRESSION FOLLOWED BY RATE INCREASE. WHEN CSS WERE PRESENTED DURING DIFFERENT PARTS OF THE RESPONSE-SHOCK (RS) INTERVAL, IT WAS ASSUMED THAT THEY WOULD ACQUIRE PROPERTIES OF INTERNAL STIMULI NORMALLY OCCURRING AT THESE TIMES DURING THE RS INTERVAL; SUBSEQUENTLY THESE CSS, PRESENTED INDEPENDENTLY OF THE AVOIDANCE BEHAVIOR, ENHANCED AND DEPRESSED RESPONDING IN A WAY CONSONANT WITH THE ASSUMPTION THAT THE RESPONSE IN SIDMAN AVOIDANCE CONSTITUTED A CS IN A TRACE FEAR CONDITIONING PROCEDURE. (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1968 American Psychological Association.