A hierarchy of items within Eysenck's EPI

Roger Watson*, Beverly Roberts (nee Shipley), Alan Gow, Ian Deary

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)


    Based on the recent finding of a hierarchical scale for Neuroticism in the NEO-Five Factor Inventory, a further personality inventory: the Eysenck Personality Inventory was analysed using the Mokken Scaling Procedure for hierarchical scales. Items from two dimensions ofthe Eysenck Personality Inventory - Neuroticism and Extraversion - produced reliable hierarchical scales of 12 and five items, respectively, for all subjects but only a scale for Neuroticism for males and females separately. The Neuroticism items ran from items expressing mild to more extreme worry and a single hierarchical scale for Neuroticism, usable with males and females, is suggested. The utility of hierarchical scales in personality measurement is discussed in terms of furthering the theoretical understanding of personality traits and also their practical applications. (c) 2008 Elsevier Ltd. All rights reserved.

    Original languageEnglish
    Pages (from-to)333-335
    Number of pages3
    JournalPersonality and Individual Differences
    Issue number4
    Publication statusPublished - Sept 2008


    • eysenck personality inventory
    • mokken scaling
    • psychometrics
    • latent traits
    • neuroticism
    • personality
    • item-response theory


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