The Factor Structure of the Narcissistic Personality Inventory

@article{Corry2008TheFS,
  title={The Factor Structure of the Narcissistic Personality Inventory},
  author={Nida H. Corry and Rebecca Davis Merritt and Sylvie Mrug and Barbara Pamp},
  journal={Journal of Personality Assessment},
  year={2008},
  volume={90},
  pages={593 - 600}
}
In the first study, we administered the 40-item Narcissistic Personality Inventory (NPI; Raskin & Terry, 1988) to 843 female and 843 male college students, most of whom were Euro-American, to comprehensively assess the NPI factor structure using confirmatory factor analysis. Initial exploratory common factor analyses (N = 724) revealed a 2-factor model (Leadership/Authority and Exhibitionism/Entitlement). Subsequently, we used confirmatory factor analysis in a separate sample (N = 724) to… 
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TLDR
A new short measure of narcissism is introduced, the NPI-13, which provides both a total score and 3 subscale scores (Leadership/Authority; Grandiose Exhibitionism; Entitlement/Exploitativeness), and it is demonstrated that both short measures manifest good convergent and discriminant validity and adequate overall reliability.
Five-Factor Model Best Describes Narcissistic Personality Inventory Across Different Item Response Formats
TLDR
The results showed that the five-factor model proposed by Ackerman et al. had the best model fit in both response formats and that a distinction between adaptive (Leadership, Vanity, and Superiority) and some aspects of maladaptive (Manipulativeness and Exhibitionism) narcissism factors could be established.
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