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Processing Speed, Working Memory, and Fluid Intelligence: Evidence for a Developmental Cascade

Processing Speed, Working Memory, and Fluid Intelligence: Evidence for a Developmental Cascade Processing speed, working memory capacity, and fluid intelligence were assessed in a large sample (N = 214) of children, adolescents, and young adults (ages 7 to 19 years) Results of path analyses revealed that almost half of the age-related increase in fluid intelligence was mediated by developmental changes in processing speed and working memory and nearly three fourths of the improvement in working memory was mediated by developmental changes in processing speed Moreover, even when age-related differences in speed, working memory and fluid intelligence were statistically controlled, individual differences in speed had a direct effect on working memory capacity which, in turn was a direct determinant of individual differences in fluid intelligence http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychological Science SAGE

Processing Speed, Working Memory, and Fluid Intelligence: Evidence for a Developmental Cascade

Psychological Science , Volume 7 (4): 5 – Jul 1, 1996

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References (23)

Publisher
SAGE
Copyright
© 1996 Association for Psychological Science
ISSN
0956-7976
eISSN
1467-9280
DOI
10.1111/j.1467-9280.1996.tb00366.x
Publisher site
See Article on Publisher Site

Abstract

Processing speed, working memory capacity, and fluid intelligence were assessed in a large sample (N = 214) of children, adolescents, and young adults (ages 7 to 19 years) Results of path analyses revealed that almost half of the age-related increase in fluid intelligence was mediated by developmental changes in processing speed and working memory and nearly three fourths of the improvement in working memory was mediated by developmental changes in processing speed Moreover, even when age-related differences in speed, working memory and fluid intelligence were statistically controlled, individual differences in speed had a direct effect on working memory capacity which, in turn was a direct determinant of individual differences in fluid intelligence

Journal

Psychological ScienceSAGE

Published: Jul 1, 1996

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