期刊
PSYCHONOMIC BULLETIN & REVIEW
卷 11, 期 2, 页码 296-301出版社
SPRINGER
DOI: 10.3758/BF03196573
关键词
-
资金
- NICHD NIH HHS [R01 HD-21338, R01 HD021338] Funding Source: Medline
Recently, investigators have suggested that visual working memory operates in a manner unaffected by the retention of verbal material. We question that conclusion on the basis of a simple dual-task experiment designed to rule out phonological memory and to identify a more central faculty as the source of a shared limitation. With a visual working memory task in which two arrays of color squares were to be compared, performance was unaffected by concurrent recitation of a two-digit list or a known seven-digit sequence. However, visual working memory performance decreased markedly when paired with a load of seven random digits. This was not a simple tradeoff, inasmuch as errors on the visual array and high digit load tasks tended to co-occur. Working memory for digits and visual information thus are both subject to at least one type of shared limit, not just domain-specific limitations. The nature of the shared limit is discussed.
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