This study investigated the effectiveness of a “forgetting cue” under different inter-stimulus intervals. Each S had each combination of 3 list conditions (2 trigrams, no cue; 2 trigrams, with cue; 1 trigram) and 3 inter-stimulus intervals (6, 15, and 40 sec.). Recall of the second trigram was measured. Performance with the cue was significantly better at 6 and 15 sec., while at 40 sec., there was no difference between 3 list conditions.
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