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Twin relationships and depression.

M Paluszny, M L Selzer, A Vinokur

    The American Journal of Psychiatry
    |September 1, 1977
    PubMed
    Summary
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    Twin studies reveal that greater closeness between twins is linked to lower depression levels. This research highlights the importance of relationships in understanding depressive symptoms.

    Area of Science:

    • Psychology
    • Behavioral Genetics

    Background:

    • Depression is a prevalent mental health concern.
    • Twin studies are valuable for exploring genetic and environmental influences on traits like depression.

    Purpose of the Study:

    • To investigate the relationship between interpersonal closeness and depressive symptoms in twins.
    • To assess depression levels in identical and fraternal twin pairs.

    Main Methods:

    • A questionnaire assessed demographic characteristics and twin relationship quality.
    • The Zung Self-Rating Depression Scale measured depressive symptoms.
    • Data were collected from 22 identical and 13 fraternal twin pairs.

    Main Results:

    • High agreement was observed across all measured variables within the twin pairs.

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  • Depression levels in the sample were comparable to general population estimates.
  • A significant inverse correlation was found between closeness and depression.

    • Conclusions:

    • Interpersonal closeness may play a protective role against depression.
    • Future research should explore these relationships in diverse groups and longitudinal studies.