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Decomposing variance in co-rumination using dyadic daily diary data.

Ana M DiGiovanni1, Talea Cornelius2, Niall Bolger1

  • 1Department of Psychology, Columbia University, 406 Schermerhorn Hall, 1190 Amsterdam Ave, New York, NY, 10027, USA.

Social Psychological and Personality Science
|February 9, 2024
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Summary
This summary is machine-generated.

Daily co-rumination in romantic couples fluctuates significantly within individuals and couples, accounting for most variance. Stable differences between couples also exist, but agreement on co-rumination levels is low.

Keywords:
close relationshipsco-ruminationquantitative methodsvariance decomposition

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Area of Science:

  • Psychology
  • Relationship Science
  • Social Psychology

Background:

  • Co-rumination, or dwelling on problems with a partner, is common in romantic relationships.
  • Understanding the daily dynamics and measurement of co-rumination in couples is crucial for relationship health.

Purpose of the Study:

  • To investigate the sources of variance in daily co-rumination within romantic couples.
  • To determine if co-rumination is best conceptualized as an individual or couple-level process.

Main Methods:

  • Employed a 14-day dyadic diary methodology.
  • Utilized variance decomposition to analyze stable and fluctuating factors in co-rumination.
  • Assessed reliability at individual and couple levels.

Main Results:

  • Within-person, within-couple fluctuations explained the largest portion of co-rumination variance (~33%).
  • Stable between-couple differences accounted for a smaller but reliable portion of variance (~14%).
  • Low within-couple agreement indicated inadequate reliability for measuring within-couple change.

Conclusions:

  • Co-rumination dynamics in couples are primarily driven by daily fluctuations rather than stable individual traits.
  • Discrepancies in perceived co-rumination warrant further investigation.
  • Findings inform dyadic relationship theories and measurement approaches.