What Does the Narcissistic Personality Inventory Really Measure?

@article{Ackerman2011WhatDT,
  title={What Does the Narcissistic Personality Inventory Really Measure?},
  author={Robert A. Ackerman and Edward A. Witt and M. Brent Donnellan and Kali Trzesniewski and Richard W. Robins and Deborah A. Kashy},
  journal={Assessment},
  year={2011},
  volume={18},
  pages={67 - 87}
}
The Narcissistic Personality Inventory (NPI) is a widely used measure of narcissism. However, debates persist about its exact factor structure with researchers proposing solutions ranging from two to seven factors. The present research aimed to clarify the factor structure of the NPI and further illuminate its nomological network. Four studies provided support for a three-factor model consisting of the dimensions of Leadership/Authority, Grandiose Exhibitionism, and Entitlement/Exploitativeness… 
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