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Does Variability Increase With Age? An Archival Study of Cognitive Measures

Does Variability Increase With Age? An Archival Study of Cognitive Measures It is often asserted that older people are more variable than younger people; however, the published data do not always support this statement. To examine directly the applicability of the assertion, measures of reaction time (RT), memory, and intelligence from studies published in Psychology and Aging and the Journal of Gerontology from 1986 to 1990 were examined. The coefficients of variability calculated from data published in studies in which a group of younger people was compared with a group of older people indicated that variability was greater among older participants on measures of RT, memory, and fluid intelligence but not crystallized intelligence. Further examination of data bearing on relative variability is indicated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychology and Aging American Psychological Association

Does Variability Increase With Age? An Archival Study of Cognitive Measures

Psychology and Aging , Volume 8 (2): 9 – Jun 1, 1993

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References (72)

Publisher
American Psychological Association
Copyright
Copyright © 1993 American Psychological Association
ISSN
0882-7974
eISSN
1939-1498
DOI
10.1037/0882-7974.8.2.156
Publisher site
See Article on Publisher Site

Abstract

It is often asserted that older people are more variable than younger people; however, the published data do not always support this statement. To examine directly the applicability of the assertion, measures of reaction time (RT), memory, and intelligence from studies published in Psychology and Aging and the Journal of Gerontology from 1986 to 1990 were examined. The coefficients of variability calculated from data published in studies in which a group of younger people was compared with a group of older people indicated that variability was greater among older participants on measures of RT, memory, and fluid intelligence but not crystallized intelligence. Further examination of data bearing on relative variability is indicated.

Journal

Psychology and AgingAmerican Psychological Association

Published: Jun 1, 1993

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