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Within-Trait Heterogeneity in Age Group Differences in Personality Domains and Facets: Implications for the Development and Coherence of Personality Traits

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  • René Mõttus
  • Anu Realo
  • Jüri Allik
  • Tõnu Esko
  • Andres Metspalu
  • Wendy Johnson

Abstract

The study investigated differences in the Five-Factor Model (FFM) domains and facets across adulthood. The main questions were whether personality scales reflected coherent units of trait development and thereby coherent personality traits more generally. These questions were addressed by testing if the components of the trait scales (items for facet scales and facets for domain scales) showed consistent age group differences. For this, measurement invariance (MI) framework was used. In a sample of 2,711 Estonians who had completed the NEO Personality Inventory 3 (NEO PI-3), more than half of the facet scales and one domain scale did not meet the criterion for weak MI (factor loading equality) across 12 age groups spanning ages from 18 to 91 years. Furthermore, none of the facet and domain scales met the criterion for strong MI (intercept equality), suggesting that items of the same facets and facets of the same domains varied in age group differences. When items were residualized for their respective facets, 46% of them had significant (p

Suggested Citation

  • René Mõttus & Anu Realo & Jüri Allik & Tõnu Esko & Andres Metspalu & Wendy Johnson, 2015. "Within-Trait Heterogeneity in Age Group Differences in Personality Domains and Facets: Implications for the Development and Coherence of Personality Traits," PLOS ONE, Public Library of Science, vol. 10(3), pages 1-30, March.
    • Handle: RePEc:plo:pone00:0119667
    DOI: 10.1371/journal.pone.0119667
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