Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive Flexibility
It has long been proposed that cognitive aging in fluid abilities is driven by age-related declines of processing speed. Although study of between-person associations generally supports this view, accumulating longitudinal between-person and within-person evidence indicates less strong associations...
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MDPI AG
2016-09-01
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| Series: | Journal of Intelligence |
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| Online Access: | http://www.mdpi.com/2079-3200/4/3/12 |
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| author | Gizem Hülür Nilam Ram Sherry L. Willis K. Warner Schaie Denis Gerstorf |
| author_facet | Gizem Hülür Nilam Ram Sherry L. Willis K. Warner Schaie Denis Gerstorf |
| author_sort | Gizem Hülür |
| collection | DOAJ |
| description | It has long been proposed that cognitive aging in fluid abilities is driven by age-related declines of processing speed. Although study of between-person associations generally supports this view, accumulating longitudinal between-person and within-person evidence indicates less strong associations between speed and fluid cognitive performance. Initial evidence also suggests that cognitive flexibility may explain within-person variability in cognitive performance. In the present study, we used up to nine waves of data over 56 years from a subsample of 582 participants of the Seattle Longitudinal Study to examine (a) within-person associations of psychomotor speed and cognitive flexibility with cognitive aging in primary mental abilities (including inductive reasoning, number ability, verbal meaning, spatial orientation, and word fluency); and (b) how these within-person associations change with age. In line with the processing speed theory, results revealed that within persons, primary mental abilities (including fluid, crystallized, and visualization measures) were indeed associated with psychomotor speed. We also observed age-related increases in within-person couplings between primary mental abilities and psychomotor speed. While the processing speed theory focuses primarily on associations with fluid abilities, age-related increases in coupling were found for a variety of ability domains. Within-person associations between primary mental abilities and cognitive flexibility were weaker and relatively stable with age. We discuss the role of speed and flexibility for cognitive aging. |
| first_indexed | 2024-04-14T02:50:10Z |
| format | Article |
| id | doaj.art-7545845995f44706a185e9ec15b194e9 |
| institution | Directory Open Access Journal |
| issn | 2079-3200 |
| language | English |
| last_indexed | 2024-04-14T02:50:10Z |
| publishDate | 2016-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Intelligence |
| spelling | doaj.art-7545845995f44706a185e9ec15b194e92022-12-22T02:16:18ZengMDPI AGJournal of Intelligence2079-32002016-09-01431210.3390/jintelligence4030012jintelligence4030012Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive FlexibilityGizem Hülür0Nilam Ram1Sherry L. Willis2K. Warner Schaie3Denis Gerstorf4Department of Psychology and University Research Priority Program “Dynamics of Healthy Aging”, University of Zurich, 8050 Zurich, SwitzerlandDepartment of Human Development and Family Studies, Pennsylvania State University, University Park, 003329 PA, USADepartment of Psychiatry and Behavioral Sciences, University of Washington, Seattle, 98195 WA, USADepartment of Psychiatry and Behavioral Sciences, University of Washington, Seattle, 98195 WA, USADepartment of Psychology, Humboldt University, 10099 Berlin, GermanyIt has long been proposed that cognitive aging in fluid abilities is driven by age-related declines of processing speed. Although study of between-person associations generally supports this view, accumulating longitudinal between-person and within-person evidence indicates less strong associations between speed and fluid cognitive performance. Initial evidence also suggests that cognitive flexibility may explain within-person variability in cognitive performance. In the present study, we used up to nine waves of data over 56 years from a subsample of 582 participants of the Seattle Longitudinal Study to examine (a) within-person associations of psychomotor speed and cognitive flexibility with cognitive aging in primary mental abilities (including inductive reasoning, number ability, verbal meaning, spatial orientation, and word fluency); and (b) how these within-person associations change with age. In line with the processing speed theory, results revealed that within persons, primary mental abilities (including fluid, crystallized, and visualization measures) were indeed associated with psychomotor speed. We also observed age-related increases in within-person couplings between primary mental abilities and psychomotor speed. While the processing speed theory focuses primarily on associations with fluid abilities, age-related increases in coupling were found for a variety of ability domains. Within-person associations between primary mental abilities and cognitive flexibility were weaker and relatively stable with age. We discuss the role of speed and flexibility for cognitive aging.http://www.mdpi.com/2079-3200/4/3/12psychomotor speedcognitive flexibilityprimary mental abilitiesSeattle Longitudinal Studycognitive aginglongitudinalwithin-person coupling |
| spellingShingle | Gizem Hülür Nilam Ram Sherry L. Willis K. Warner Schaie Denis Gerstorf Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive Flexibility Journal of Intelligence psychomotor speed cognitive flexibility primary mental abilities Seattle Longitudinal Study cognitive aging longitudinal within-person coupling |
| title | Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive Flexibility |
| title_full | Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive Flexibility |
| title_fullStr | Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive Flexibility |
| title_full_unstemmed | Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive Flexibility |
| title_short | Cognitive Aging in the Seattle Longitudinal Study: Within-Person Associations of Primary Mental Abilities with Psychomotor Speed and Cognitive Flexibility |
| title_sort | cognitive aging in the seattle longitudinal study within person associations of primary mental abilities with psychomotor speed and cognitive flexibility |
| topic | psychomotor speed cognitive flexibility primary mental abilities Seattle Longitudinal Study cognitive aging longitudinal within-person coupling |
| url | http://www.mdpi.com/2079-3200/4/3/12 |
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