Item response theory and validity of the NEO-FFI in adolescents

Ruth Spence · Matthew Owens · Ian Michael Goodyer

40 citations0/0 files storedPersonality and Individual Differences

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Psychometric Methodologies and Testing Personality Traits and Psychology Psychological Testing and Assessment

Abstract

The present study applied item response theory (IRT) to the NEO five factor inventory (NEO-FFI) completed by a community based sample of adolescents. The results revealed that many of these personality items may not be discriminating well, with some traits demonstrating greater reliability than others. Furthermore, the threshold values highlighted that the majority of the items had skewed responses, suggesting a limited utility of some response categories. Generally, removing poorly discriminating items does not harm external validity, suggesting IRT reduces measurement error and increases reliability without compromising validity.

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References

2000Item response theory for psychologists 1968ESTIMATION OF LATENT ABILITY USING A RESPONSE PATTERN OF GRADED SCORES1 2010NEO inventories for the NEO Personality Inventory-3 (NEO-PI-3), NEO Five-Factor Inventory-3 (NEO-FFI-3), NEO Personality Inventory-Revised (NEO PI-R) : professional manual 1985The basics of item response theory 2003Personality predicts academic performance: Evidence from two longitudinal university samples 2011Trends in psychopathology across the adolescent years: What changes when children become adolescents, and when adolescents become adults?2001The Social Desirability Scale-17 (SDS-17)2007The role of the bifactor model in resolving dimensionality issues in health outcomes measures

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