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Relation between loneliness and depression: a structural equation analysis

D G Weeks, J L Michela, L A Peplau

    Journal of Personality and Social Psychology
    |December 1, 1980
    PubMed
    Summary
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    Loneliness and depression are distinct but related states. This study found neither directly causes the other, though they may share common origins and are stable over time.

    Area of Science:

    • Psychology
    • Mental Health Research

    Background:

    • Loneliness and depression frequently co-occur, making it difficult to determine causality.
    • Existing research is limited by the inability to experimentally manipulate these states.

    Purpose of the Study:

    • To investigate the distinctiveness and causal relationship between loneliness and depression.
    • To utilize a longitudinal design and structural equation modeling to address research limitations.

    Main Methods:

    • Administered measures of loneliness and depression to 333 undergraduates at two time points, 5 weeks apart.
    • Employed structural equation modeling to analyze correlations and causal pathways.

    Main Results:

    • Loneliness and depression were found to be correlated but distinct constructs.

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  • Neither loneliness nor depression was identified as a direct cause of the other.
  • Both states demonstrated high stability over the 5-week study period.

    • Conclusions:

    • Loneliness and depression are separate psychological states.
    • Shared underlying factors may contribute to both loneliness and depression.
    • Interventions targeting loneliness or depression may need to consider their distinct yet related nature.