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Better Cognition in New Birth Cohorts of 70 Year Olds, But Greater Decline Thereafter
University of Gothenburg, Gothenburg, Sweden.
Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI). University of Gothenburg, Gothenburg, Sweden.
University of Gothenburg, Gothenburg, Sweden.
Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
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2017 (English)In: The journals of gerontology. Series B, Psychological sciences and social sciences, ISSN 1079-5014, E-ISSN 1758-5368, Vol. 72, no 1, 16-24 p.Article in journal (Refereed) Published
Abstract [en]

Objectives

To evaluate birth cohort differences in level of cognition and rate of change in old age.

Methods

Data were drawn from three population-based Swedish samples including age-homogenous cohorts born 1901/02, 1906/07, and 1930, and measured on the same cognitive tests at ages 70, 75, and 79 as part of the Gerontological and Geriatric Populations Studies in Gothenburg (H70). We fitted growth curve models to the data using a Bayesian framework and derived estimates and inferences from the marginal posterior distributions.

Results

We found moderate to large birth cohort effects in level of performance on all cognitive outcomes. Later born cohorts, however, showed steeper linear rate of decline on reasoning, spatial ability, and perceptual- and motor-speed, but not on picture recognition memory and verbal ability.

Discussion

These findings provide strong evidence for substantial birth cohort effects in cognition in older ages and emphasize the importance of life long environmental factors in shaping cognitive aging trajectories. Inferences from cognitive testing, and standardization of test scores, in elderly populations must take into account the substantial birth cohort differences. © The Author 2016. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved.

Place, publisher, year, edition, pages
Cary, NC: Oxford University Press, 2017. Vol. 72, no 1, 16-24 p.
Keyword [en]
Aging, Cohort differences, Cohort effects, Cognition, Cognitive change
National Category
Other Medical Sciences
Identifiers
URN: urn:nbn:se:hh:diva-33097DOI: 10.1093/geronb/gbw125PubMedID: 27974472OAI: oai:DiVA.org:hh-33097DiVA: diva2:1066383
Available from: 2017-01-18 Created: 2017-01-18 Last updated: 2017-07-06Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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