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Remember This: Age Moderation of Genetic and Environmental Contributions to Verbal Episodic Memory from Midlife through Late Adulthood.

Publication ,  Journal Article
Luczak, SE; Beam, CR; Pahlen, S; Lynch, M; Pilgrim, M; Reynolds, CA; Panizzon, MS; Catts, VS; Christensen, K; Finkel, D; Franz, CE; Kremen, WS ...
Published in: Intelligence
2023

It is well documented that memory is heritable and that older adults tend to have poorer memory performance than younger adults. However, whether the magnitudes of genetic and environmental contributions to late-life verbal episodic memory ability differ from those at earlier ages remains unresolved. Twins from 12 studies participating in the Interplay of Genes and Environment in Multiple Studies (IGEMS) consortium constituted the analytic sample. Verbal episodic memory was assessed with immediate word list recall (N = 35,204 individuals; 21,792 twin pairs) and prose recall (N = 3,805 individuals; 2,028 twin pairs), with scores harmonized across studies. Average test performance was lower in successively older age groups for both measures. Twin models found significant age moderation for both measures, with total inter-individual variance increasing significantly with age, although it was not possible definitively to attribute the increase specifically to either genetic or environmental sources. Pooled results across all 12 studies were compared to results where we successively dropped each study (leave-one-out) to assure results were not due to an outlier. We conclude the models indicated an overall increase in variance for verbal episodic memory that was driven by a combination of increases in the genetic and nonshared environmental parameters that were not independently statistically significant. In contrast to reported results for other cognitive domains, differences in environmental exposures are comparatively important for verbal episodic memory, especially word list learning.

Duke Scholars

Published In

Intelligence

DOI

ISSN

0160-2896

Publication Date

2023

Volume

99

Location

United States

Related Subject Headings

  • Social Psychology
  • 5202 Biological psychology
  • 5201 Applied and developmental psychology
  • 1702 Cognitive Sciences
  • 1701 Psychology
 

Citation

APA
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Luczak, S. E., Beam, C. R., Pahlen, S., Lynch, M., Pilgrim, M., Reynolds, C. A., … IGEMS Consortium, . (2023). Remember This: Age Moderation of Genetic and Environmental Contributions to Verbal Episodic Memory from Midlife through Late Adulthood. Intelligence, 99. https://doi.org/10.1016/j.intell.2023.101759
Luczak, Susan E., Christopher R. Beam, Shandell Pahlen, Morgan Lynch, Matthew Pilgrim, Chandra A. Reynolds, Matthew S. Panizzon, et al. “Remember This: Age Moderation of Genetic and Environmental Contributions to Verbal Episodic Memory from Midlife through Late Adulthood.Intelligence 99 (2023). https://doi.org/10.1016/j.intell.2023.101759.
Luczak SE, Beam CR, Pahlen S, Lynch M, Pilgrim M, Reynolds CA, et al. Remember This: Age Moderation of Genetic and Environmental Contributions to Verbal Episodic Memory from Midlife through Late Adulthood. Intelligence. 2023;99.
Luczak, Susan E., et al. “Remember This: Age Moderation of Genetic and Environmental Contributions to Verbal Episodic Memory from Midlife through Late Adulthood.Intelligence, vol. 99, 2023. Pubmed, doi:10.1016/j.intell.2023.101759.
Luczak SE, Beam CR, Pahlen S, Lynch M, Pilgrim M, Reynolds CA, Panizzon MS, Catts VS, Christensen K, Finkel D, Franz CE, Kremen WS, Lee T, McGue M, Nygaard M, Plassman BL, Whitfield KE, Pedersen NL, Gatz M, IGEMS Consortium. Remember This: Age Moderation of Genetic and Environmental Contributions to Verbal Episodic Memory from Midlife through Late Adulthood. Intelligence. 2023;99.
Journal cover image

Published In

Intelligence

DOI

ISSN

0160-2896

Publication Date

2023

Volume

99

Location

United States

Related Subject Headings

  • Social Psychology
  • 5202 Biological psychology
  • 5201 Applied and developmental psychology
  • 1702 Cognitive Sciences
  • 1701 Psychology