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Related Experiment Videos

Subjective wellbeing and sleep problems: a bivariate twin study.

Ragnhild B Nes1, Espen Røysamb, Ted Reichborn-Kjennerud

  • 1Division of Epidemiology, The Norwegian Institute of Public Health, Oslo, Norway. Ragnhild.bang.nes@fhi.no

Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies
|October 11, 2005
PubMed
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Genetic factors significantly influence both subjective wellbeing (SWB) and sleep problems, with shared genetic influences suggesting a protective effect of wellbeing on sleep. These findings apply to both males and females.

Area of Science:

  • Behavioral Genetics
  • Psychiatry
  • Sleep Science

Background:

  • Subjective wellbeing (SWB) and sleep problems are crucial aspects of mental health.
  • Understanding the interplay between SWB and sleep is vital for developing effective interventions.
  • Previous research suggests a correlation, but the underlying etiological factors remain underexplored.

Purpose of the Study:

  • To investigate the genetic and environmental influences on the relationship between SWB and self-reported sleep problems.
  • To explore sex-specific effects on the covariance between SWB and sleep problems.
  • To quantify the contribution of genetic and environmental factors to the observed correlation.

Main Methods:

  • Analysis of questionnaire data from 8045 Norwegian twins (aged 18-31).

Related Experiment Videos

  • Utilized structural equation modeling to assess genetic and environmental influences.
  • Examined phenotypic variance, covariance, and sex-specific effects.

    • Main Results:

    • A moderate negative correlation (-.43) was found between SWB and sleep problems.
    • Significant genetic influences were identified for both SWB and sleep problems in both sexes.
    • The best-fitting model indicated shared additive genetic factors and individual environmental factors, with nonadditive genetic effects for sleep problems.

    Conclusions:

    • There is substantial overlap in the genetic etiology of SWB and sleep problems.
    • Shared genetic factors suggest that genetic predispositions influencing SWB may also protect against sleep problems.
    • Findings indicate similar genetic and environmental influences for males and females, with no significant sex-specific effects.