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Birth cohort differences in proportion of individuals showing cognitive decline, stability or gain
Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI).ORCID iD: 0000-0002-0091-2005
University of Gothenburg, Gothenburg, Sweden.
University of Gothenburg, Gothenburg, Sweden.
2018 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Aim: The aim of the present study was to investigate possible birth cohort differences in the proportion of individuals showing cognitive decline, stability or gain from age 70 to 79.

Method: We used data from three cohorts born in 1901-02, 1906-07, and 1930 measured at ages 70 and 79 years on four cognitive measures (i.e. spatial ability, figure identification, verbal meaning, and logical reasoning). We used the standard error of measurement (SEM=) at baseline (i.e. 70 years of age) to categorize participants as showing cognitive decline (if scores decreased by >1 SEM between ages 70 and 79), cognitive stability (if change was ≤1SEM), or cognitive gain (if increasing by >1 SEM).

Findings: χ²-tests indicated statistically significant birth cohort differences on all four cognitive measures, with weak to moderate effect sizes. For all four cognitive measures earlier born cohorts contained a smaller proportion of participants showing cognitive decline, and a larger proportion of participants showing gain, compared to later born cohorts. This was particularly evident when comparing the 1901-02 and 1930 cohorts.

Conclusion: These cohort differences may relate to cohort differences in cognitive reserve, selective survival, or psychometric properties of the cognitive tests.

Place, publisher, year, edition, pages
2018.
Keywords [en]
aging, cognitive decline, cohort differences, cognitive gain, cognitive stability
National Category
Psychology
Identifiers
URN: urn:nbn:se:hh:diva-38518OAI: oai:DiVA.org:hh-38518DiVA, id: diva2:1268921
Conference
24th Nordic Congress of Gerontology (24NKG), Lessons of a lifetime, 2-4 Mai, 2018, Oslo, Norway
Available from: 2018-12-07 Created: 2018-12-07 Last updated: 2018-12-12Bibliographically approved

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Karlsson, Peter

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CiteExportLink to record
Permanent link

Direct link
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
  • html
  • text
  • asciidoc
  • rtf