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Bringing the Forgotten Back to Life: Providing To-Be-Forgotten Information as Retrieval Cues Improves Memory

Abstract

It is impossible, even undesirable, for us to remember everything, thus intentional forgetting is an essential process for cognitive efficiency. Decades of research using an item-method directed forgetting paradigm demonstrate our ability to intentionally forget information. To-be-remembered (R) and to-be-forgotten (F) items are encoded differently, with R items better represented than F items in long-term memory. Consequently, we predicted that the well-established part-list cuing impairment of recall caused by re-exposure of some of the studied items prior to test should be greater when R items rather than F items serve as the part-list cues. We found that, relative to no part-list cues, R items reduced recall performance for the remaining R items, but F items improved recall performance for the remaining F items. We interpret this finding as evidence that F items disrupt the retrieval strategy less than R items do, and propose a context differentiation account.

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