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ERIC Number: EJ733648
Record Type: Journal
Publication Date: 2004-Jul
Pages: 19
Abstractor: Author
ISSN: ISSN-0012-1649
Mapping the Developmental Constraints on Working Memory Span Performance
Bayliss, Donna M.; Jarrold, Christopher; Baddeley, Alan D.; Gunn, Deborah M.; Leigh, Eleanor
Developmental Psychology, v41 n4 p579-597 Jul 2005
This study investigated the constraints underlying developmental improvements in complex working memory span performance among 120 children of between 6 and 10 years of age. Independent measures of processing efficiency, storage capacity, rehearsal speed, and basic speed of processing were assessed to determine their contribution to age-related variance in complex span. Results showed that developmental improvements in complex span were driven by 2 age-related but separable factors: 1 associated with general speed of processing and 1 associated with storage ability. In addition, there was an age-related contribution shared between working memory, processing speed, and storage ability that was important for higher level cognition. These results pose a challenge for models of complex span performance that emphasize the importance of processing speed alone.
American Psychological Association. Journals Department, 750 First Street, NE, Washington, DC 20002-4242. Tel: 800-374-2721; Tel: 202-336-5540; Fax: 202-336-5549; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A