Abstract
In the present experiments , we examined adult age differences in the ability to suppress false memories, using the Deese-Roediger-McDermott (DRM) paradigm (Deese, 1959; Roediger & McDermott, 1995). Participants studied lists of words (e.g.,bed, rest, awake, etc.), each related to a nonpresented critical lure word (e.g.,sleep). Typically, recognition tests reveal false alarms to critical lures at rates comparable to those for hits for studied words. In two experiments, separate groups of young and older adults were unwarned about the false memory effect, warned before studying the lists, or warned after study and before test. Lists were presented at either a slow rate (4 sec/word) or a faster rate (2 sec/word). Young adults were better able to discriminate between studied words and critical lures when warned about the DRM effect either before study or after study but before retrieval, and their performance improved with a slower presentation rate. Older adults were able to discriminate between studied words and critical lures when given warnings before study, but not when given warnings after study but before retrieval. Performance on a working memory capacity measure predicted false recognition following study and retrieval warnings. The results suggest that effective use of warnings to reduce false memories is contingent on the quality and type of encoded information, as well as on whether that information is accessed at retrieval. Furthermore, discriminating between similar sources of activation is dependent on working memory capacity, which declines with advancing age.
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This research was supported by Grants R01AG06265-15 and T32AG00175-13 from the National Institute on Aging and by a seed grant from the Georgia Gerontology Consortium. The first experiment was completed in partial fulfillment of the master’s degree for the first author at Georgia Institute of Technology.
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McCabe, D.P., Smith, A.D. The effect of warnings on false memories in young and older adults. Memory & Cognition 30, 1065–1077 (2002). https://doi.org/10.3758/BF03194324
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DOI: https://doi.org/10.3758/BF03194324