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Examining the reliability and validity of clinician ratings on the Five-Factor Model Score Sheet

Lauren R Few1, Joshua D Miller, Jennifer Q Morse

  • 1University of Georgia, Athens, GA 30602-3013, USA.

Assessment
|June 4, 2010
PubMed

Insights

The Five-Factor Model Score Sheet (FFMSS) shows promise for clinical use, offering a reliable clinician-rated measure of personality. It demonstrates good validity and accounts for significant variance in functioning, even after controlling for other pathologies.

Area of Science:

  • Psychology
  • Clinical Psychology
  • Personality Assessment

Background:

  • The Five-Factor Model (FFM) is widely used in research but less so in clinical settings due to time constraints and preference against self-report.
  • Existing FFM measures face challenges in clinical application, necessitating alternative assessment tools.

Purpose of the Study:

  • To examine the reliability and validity of the Five-Factor Model Score Sheet (FFMSS), a clinician-rated instrument.
  • To assess the FFMSS's utility in clinical settings for personality assessment.

Main Methods:

  • The FFMSS, a 30-item clinician rating form, was administered to 130 outpatients.
  • Interrater reliability, internal consistency, and convergent/discriminant validity were assessed.
  • The FFMSS's ability to predict functioning and its incremental validity over psychopathology were evaluated.

Main Results:

  • Clinical raters showed good interrater reliability for the FFMSS across personality profiles.
  • Internal consistency was good for most FFM domains, with Neuroticism being an exception.
  • FFMSS ratings correlated as expected with self-reported traits and personality disorder symptoms.
  • FFMSS domains explained approximately 50% of the variance in functioning, independent of Axis I and II pathology.

Conclusions:

  • The FFMSS is a reliable and valid clinician-rated measure of the FFM.
  • The FFMSS demonstrates potential for practical clinical application in personality assessment.
  • The FFMSS offers valuable insights into functioning beyond diagnosed psychopathology.

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