Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Eysenck Personality Inventory

  • Angela M. Bodling
  • Thomas Martin
  • Sangsun KimEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_2025




The Eysenck Personality Inventory (EPI) is a self-report instrument designed to measure two central dimensions of personality, extraversion, and neuroticism. This instrument is comprised of 57 yes/no items and yields total scores for extraversion and neuroticism as well as a validity score (e.g., Lie Scale). Individuals are generally classified as “high” or “low” on the two dimensions. Persons high in extraversion are seen as social, carefree, and optimistic, while low scorers are generally quiet, introspective, and reserved. Individuals classified as high in neuroticism are prone to emotional distress/instability, while those low in this dimension are generally calm and emotionally stable.

Current Knowledge

Test Theory, Development, and Properties

The EPI was developed in 1964 based on a conceptualization of personality that identifies extraversion and neuroticism as the two primary and independent factors comprising the global construct of personality. The...

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Angela M. Bodling
    • 1
  • Thomas Martin
    • 1
  • Sangsun Kim
    • 2
    Email author
  1. 1.Center for Health Care QualityUniversity of Missouri—ColumbiaColumbiaUSA
  2. 2.Psychological SciencesUniversity of MissouriColumbiaUSA