Genetic and environmental influences on social support in later life: A longitudinal analysis

C. S. Bergeman, Jenae Marie Neiderhiser, N. L. Pedersen, R. Plomin

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The present study assessed the etiology of individual differences in social support over a six-year period. The availability of friend support, family support, and the perceived adequacy of the social support network was assessed three times using identical and same-gender fraternal twins reared together and reared apart from the Swedish Adoption/Twin Study of Aging. Results are based on the pairwise responses at the three occasions of measurement (labeled Q1, Q2, and Q3): 462 pairs at Q1 (assessed October 1984), 474 pairs at Q2 (October 1987), and 431 pairs at Q3 (October 1990). The longitudinal phenotypic correlations (ranging from .49 to .77) indicate that social support is a moderately stable characteristic. Qualitative genetic model-fitting analyses resulted in significant heritability estimates for the social support measures at all three measurement occasions. Results also indicate considerable stability in genetic effects across measurement occasions, with genetic correlations ranging from .65 to .97. Nonshared environmental influences were substantial contributors to social support, but were less stable across the measurement occasions, with correlations ranging from .07 to .52.

Original languageEnglish (US)
Pages (from-to)107-135
Number of pages29
JournalInternational Journal of Aging and Human Development
Volume53
Issue number2
DOIs
StatePublished - Nov 27 2001

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Social Support
Dizygotic Twins
Twin Studies
Genetic Models
Individuality

All Science Journal Classification (ASJC) codes

  • Aging
  • Developmental and Educational Psychology
  • Geriatrics and Gerontology

Cite this

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Genetic and environmental influences on social support in later life : A longitudinal analysis. / Bergeman, C. S.; Neiderhiser, Jenae Marie; Pedersen, N. L.; Plomin, R.

In: International Journal of Aging and Human Development, Vol. 53, No. 2, 27.11.2001, p. 107-135.

Research output: Contribution to journalArticle

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