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Published on: August 30, 2011
Discriminating semantic from episodic relatedness in young and older adults
Meredith M Patterson1, Leah L Light, Jeffrey C Van Ocker
1Psychology Department, Claremont Graduate University, Claremont, CA, USA. mmpatterson@salisbury.edu
Abstract:
The ability of young (aged 18-30) and older (aged 60-80) adults to discriminate pre-experimental (semantic) from experimental (episodic) associations was examined. Participants studied a list containing semantically related and unrelated word pairs and then made either associative recognition (Experiments 1a and b) or semantic relatedness (Experiment 2) judgments at various response deadlines. For associative recognition judgments, both young and older adults benefited from semantic relatedness, leading to more hits for related than unrelated pairs, and at the long response deadline, older adults' performance on those pairs matched that of young participants. Also, both young and older adults demonstrated superior discrimination for unrelated lures whose members had originally been studied in related pairs - evidence for recall-to-reject processing in both age groups. In making semantic relatedness judgments, both young and older adults showed an episodic priming effect. When older adults can rely on long-standing associations, their performance resembles that of young adults - both in associative recognition and in episodic priming.
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