College Ss were given 75 lever-press escape trials with omission of entertaining material constituting the aversive stimulus. Reinstatement of the recording occurred either 0, 3, 6, or 9 sec. after the escape response. One-half of Ss in each delay group received 15 inescapable trials immediately prior to the escape trials. The results indicated that response latencies for the escape trials were directly related to the delay interval employed. Inescapable pretraining did not differentially affect performance.
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