Abstract

One of the most robust findings in cognitive aging is that of a significant decline in self-initiated recall from episodic memory. In laboratory studies this deficit can be seen in significant age differences in word-list free recall. In this article, we focus on free recall of categorized word lists where one observes "response bursting" in the form of a rapid output of within-category items with longer delays between categories. Age differences appear primarily in between-category latencies, results that are consistent with a relative sparing of semantic memory combined with an age-deficit in episodic retrieval. When adjusted for differences in overall mnemonic ability, we demonstrate that the relationship between organization and learning remains invariant with normal aging. We argue that the locus of the age deficit in free recall lies at the level of temporal coding of items and the use of temporal associations to guide recall.

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