Does the capacity of working memory change with age?

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Abstract
Young and elderly adults were compared for recall performance on simple digit and word spans (traditional tests of primary memory), versus a "loaded" auditory word span test designed to emphasize working memory capacity. Although digit spans were identical for the two age groups, they were small but significant age differences in word span, and even larger differences in working memory preformance. An analysis of correlations between span measures and verbal ability scores supported the position that working memory loading represents a special problem for the elderly.