Equivalence of Narcissistic Personality Inventory constructs and correlates across scoring approaches and response formats

Wetzel, Eunike and Roberts, Brent W. and Fraley, Chris and Brown, Anna (2015) Equivalence of Narcissistic Personality Inventory constructs and correlates across scoring approaches and response formats. Journal of Research in Personality, . ISSN 0092-6566. (doi:https://doi.org/10.1016/j.jrp.2015.12.002) (Full text available)

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Official URL
http://dx.doi.org/10.1016/j.jrp.2015.12.002

Abstract

The prevalent scoring practice for the Narcissistic Personality Inventory (NPI) ignores the forced-choice nature of the items. The aim of this study was to investigate whether findings based on NPI scores reported in previous research can be confirmed when the forced-choice nature of the NPI’s original response format is appropriately modeled, and when NPI items are presented in different response formats (true/false or rating scale). The relationships between NPI facets and various criteria were robust across scoring approaches (mean score vs. model-based), but were only partly robust across response formats. In addition, the scoring approaches and response formats achieved equivalent measurements of the vanity facet and in part of the leadership facet, but differed with respect to the entitlement facet.

Item Type: Article
Uncontrolled keywords: narcissism, Narcissistic Personality Inventory, forced-choice, response format, Thurstonian item response model
Subjects: B Philosophy. Psychology. Religion > BF Psychology
H Social Sciences > HA Statistics
Divisions: Faculties > Social Sciences > School of Psychology > Applied Psychology
Depositing User: Anna Brown
Date Deposited: 22 Dec 2015 15:14 UTC
Last Modified: 10 Feb 2016 17:09 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/53560 (The current URI for this page, for reference purposes)
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