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Trait-specific dependence in romantic relationships.

Bruce J Ellis1, Jeffry A Simpson, Lorne Campbell

  • 1Department of Psychology, University of Canterbury, Christchurch, New Zealand. b.ellis@psyc.canterbury.ac.nz

Journal of Personality
|September 27, 2002
PubMed
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Researchers developed the Trait-Specific Dependence Inventory (TSDI) to measure romantic partner comparisons. The TSDI reliably predicts relationship outcomes, offering a novel approach to assessing dependence.

Area of Science:

  • Psychology
  • Social Psychology
  • Relationship Science

Background:

  • Existing measures of relationship dependence often lack specificity.
  • Trait psychology, evolutionary psychology, and interdependence theory provide frameworks for understanding partner evaluation.
  • Mate value dimensions are crucial in romantic relationship dynamics.

Purpose of the Study:

  • To develop and validate the Trait-Specific Dependence Inventory (TSDI).
  • To assess romantic partner comparisons across key mate value dimensions.
  • To introduce and establish the construct of trait-specific dependence.

Main Methods:

  • Four studies were conducted to develop and test the TSDI.
  • Principal components analysis and confirmatory factor analysis were used for scale development and validation.

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  • Convergent, discriminant, and predictive validity were assessed using established personality and relationship outcome measures.

    • Main Results:

    • The TSDI demonstrated a robust six-factor structure: Agreeable/Committed, Resource Accruing Potential, Physical Prowess, Emotional Stability, Surgency, and Physical Attractiveness.
    • The TSDI scales showed good reliability and validity, correlating with, yet distinct from, traditional personality traits.
    • TSDI scores significantly predicted relationship outcomes (love, time investment, anger/upset) beyond general personality traits.

    Conclusions:

    • The Trait-Specific Dependence Inventory (TSDI) is a reliable and valid measure of trait-specific dependence in romantic relationships.
    • The TSDI offers a unique construct and method for assessing dependence by focusing on partner comparisons.
    • This research links trait-specific dependence to broader theories of mate value and relationship psychology.