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Primary traits of Eysenck's P-E-N system: three- and five-factor solutions

P T Costa1, R R McCrae

  • 1Gerontology Research Center, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA.

Journal of Personality and Social Psychology
|August 1, 1995
PubMed
Summary

The Eysenck Personality Profiler (EPP) shows preliminary validity but may better align with the 5-factor model than its intended 3-factor structure. Further analysis suggests potential misclassifications within the EPP scales.

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Area of Science:

  • Psychology
  • Personality Psychology
  • Psychometrics

Background:

  • The Eysenck Personality Profiler (EPP) was developed to measure primary traits associated with Neuroticism, Extraversion, and Psychoticism.
  • Assessing the validity and structural alignment of personality inventories is crucial for accurate psychological assessment.

Purpose of the Study:

  • To evaluate the convergent and discriminant validity of the Eysenck Personality Profiler (EPP) scales.
  • To examine the underlying factor structure of the EPP and its alignment with established personality models.

Main Methods:

  • Administered the Eysenck Personality Profiler (EPP) to 229 adults.
  • Correlated EPP scales with the Eysenck Personality Questionnaire--Revised and the Revised NEO Personality Inventory (NEO-PI-R).

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  • Conducted varimax and targeted validimax factor analyses.

    • Main Results:

    • Preliminary evidence supported the convergent and discriminant validity of the EPP scales against the NEO-PI-R.
    • Factor analyses indicated that some EPP scales might be misclassified.
    • The EPP scales appeared to be better understood within the framework of the 5-factor model than the intended 3-factor model.

    Conclusions:

    • The Eysenck Personality Profiler (EPP) demonstrates initial validity but its structural representation may differ from its theoretical underpinnings.
    • Findings suggest a potential re-evaluation of EPP scale classifications in light of the 5-factor model of personality.