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Self- and peer perspectives on pathological personality traits and interpersonal problems.

Allan Clifton1, Eric Turkheimer, Thomas F Oltmanns

  • 1Department of Psychology, University of Virginia, Charlottesville, VA, USA. cliftonad@upmc.edu

Psychological Assessment
|July 21, 2005
PubMed
Summary

Self and peer reports identify similar personality disorder and interpersonal problem constructs. However, limited overlap between self and peer data highlights the need for multiple information sources in personality research.

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Area of Science:

  • Psychology
  • Clinical Psychology
  • Personality Psychology

Background:

  • Personality disorders significantly impact interpersonal functioning.
  • Understanding personality pathology often relies on self-report, which may be limited.
  • Peer reports offer an alternative perspective on interpersonal problems.

Purpose of the Study:

  • To compare self-report and peer-report measures of personality disorders and interpersonal problems.
  • To examine the shared variance between self and peer perceptions of personality pathology.
  • To assess the convergence of personality disorder features and interpersonal problems across different informants.

Main Methods:

  • Utilized self- and peer-report versions of the Peer Inventory for Personality Disorder (PIPD).

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  • Administered the Inventory of Interpersonal Problems-64 (IIP-64) using both self- and peer-report formats.
  • Conducted canonical correlation analyses with a sample of 393 participants.

    • Main Results:

    • Canonical analyses revealed similar relationships between personality disorder features and interpersonal problems regardless of informant (self vs. peer).
    • Analyses comparing self-report and peer-report data showed minimal shared variance, suggesting substantial method variance.
    • Despite identifying similar constructs, self-report and peer-report data demonstrated low overlap.

    Conclusions:

    • While self and peer informants identify comparable personality pathology and interpersonal problem constructs, their specific reports show little agreement.
    • The low shared variance underscores the significant influence of reporting method on the data obtained.
    • Findings emphasize the critical importance of incorporating multiple sources of information (e.g., self and peer reports) for a comprehensive understanding of personality disorders and interpersonal functioning.