Verbal and spatial short-term memory: Common sources of developmental change?

被引:69
作者
Chuah, YML [1 ]
Maybery, MT [1 ]
机构
[1] Univ Western Australia, Dept Psychol, Nedlands, WA 6907, Australia
关键词
short-term memory; working memory; verbal memory; spatial memory; articulation rate; changing state; processing speed; memory development;
D O I
10.1006/jecp.1999.2493
中图分类号
B844 [发展心理学(人类心理学)];
学科分类号
040202 ;
摘要
Verbal and spatial span, articulation and tapping rate, and verbal and spatial speed-of-search ch tasks were administered to sixty 6- to 12-year-olds. A variance-partitioning procedure was then used to identify age-related and age-invariant components of variance in span. Outcomes were very similar for verbal and spatial span, in particular, (i) most of the age-related variance was shared by the speed-of-search and rate predictors, (ii) articulation rate provided an age-independent contribution, (iii) changing-state versions of predictor tasks did not account for variance over steady-state versions, and (iv) predictors of the same modality as the span task did not outperform predictors of the other modality. We conclude that verbal and spatial short-term memory appear to rely on similar processes when serial recall is required and that developments in span are closely tied to increases in processing speed. (C) 1999 Academic Press.
引用
收藏
页码:7 / 44
页数:38
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