The influence of information processing complexity on working memory capacity:Comparison between elderly and young adults Yuki Tateyama 1 , Ikuyo Fujita 2 1Department of Rehabilitation Medicine, Kirishimasugiyasu Hospital 2Department of Speech-Language-Hearing Sciences, International University of Health and Welfare Keyword: ワーキングメモリ , 情報処理 , 高齢者 , working memory , information processing , elderly people pp.69-76
Published Date 2009/7/15
DOI https://doi.org/10.11477/mf.6001100199
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 The purpose of this study is to examine how the degrees of information processing complexity and the types of stimulus information may affect the capacity of working memory (WM) in elderly and young adults. We designed tests comprising simple and complex tasks for both verbal and visual working memory. The subjects were 28 healthy young adults and 28 elderly adults. The results showed that the capacity of WM in the complex tasks was smaller than the capacity of WM in the simple tasks (p<0.01). We also found that the WM capacity in elderly adults was less than that in young adults. In addition, elderly adults made mistakes in the number of items recalled whereas none of the younger adults did. These findings suggested that WM capacity declines with age and is affected by the complexity of information processing. Moreover, it is thought that the decline of WM capacity is related to impairments in information processing, such as deciding whether information needs to be kept or discarded.

Copyright © 2009, Japanese Association of Speech-Language-Hearing Therapists. All rights reserved.


電子版ISSN 印刷版ISSN 1349-5828 日本言語聴覚士協会