Cited by 26Psychological Well-being and Life SatisfactionGenetic Associations and EpidemiologyNeurotransmitter Receptor Influence on Behavior

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Mates and Marriage Matter: Genetic and Environmental Influences on Subjective Wellbeing Across Marital Status

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Abstract

Specific environments and social relationships may alter the impact of genes. Previous studies have shown marriage to moderate heritability for depressive symptoms in females, suggesting that marriage provides protection or compensation against genetic risks. Similar mechanisms may be relevant for subjective wellbeing (SWB), which is considerably influenced by genes and almost universally associated with marital status. Questionnaire data on SWB from a population-based sample of 1250 monozygotic (MZ) and 981 dizygotic (DZ) male and female twin pairs (n= 4462) were analyzed using structural equation modeling by means of Mx to investigate genetic and environmental influences on SWB across marital status. Resemblance for SWB in MZ twins exceeded that of DZ twins, but the magnitude of this difference varied across marital status. Genetic factors explained 51% and 54% of the variance in SWB among unmarried males and females, and 41% and 39% in married or cohabitating respondents. Remaining variance was attributable to the nonshared environment. The genetic influences were partly different (r g= 0.64) across marital status in females, but overlapping in married and single males. Our findings show that marriage moderates the magnitude of genetic influences on SWB in both males and females, with a smaller estimate of genetic influences for those with a marital or equivalent partner. The genetic influences on SWB are thus clearly contingent on the environmental context.

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Metadata

Authors
Nes, R. B., Røysamb, E., Harris, J. R., Czajkowski, N., & Tambs, K.
Affiliations
Norwegian Institute of Public Health (NO)
Corresponding author
Nes, Ragnhild B.
Venue
Twin Research and Human Genetics
Published
2010-08-01
Volume
13
Issue
4
Pages
312-321
ISSN
  • 1832-4274 (ISSN-L)
  • 1839-2628
OpenAlex
W2123201200
Cited by
26
References
5
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 2 · 2021: 2 · 2018: 1 · 2016: 4 · 2015: 3 · 2014: 3 · 2012: 1
FWCI
0.44
Type
journal article
Language
en
Open access
Locations
  • Twin Research and Human Genetics (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • EkstraStiftelsen Helse og Rehabilitering (Stiftelsen Dam)
  • European Commission (QLG2-CT-2002-01254, 01254)
  • Norges Forskningsråd
  • Norwegian Institute of Public Health
Topics
  • Social Sciences › Psychology › Social Psychology › Psychological Well-being and Life Satisfaction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
subjective well-being, marital status, marriage, heritability, genetic factors, nonshared environment, twin studies, monozygotic twins, dizygotic twins, gender differences, cohabitation
MeSH terms
Adult, Environment, Female, Happiness, Humans, Male, Marriage, Models, Genetic, Personal Satisfaction, Twins, Dizygotic, Twins, Monozygotic, Marital Status

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