Narcissistic Personality Inventory-40 (NPI-40)

A further refinement of earlier NPI versions developed by Raskin and Hall containing 80 and 54 items, respectively, the shortened Narcissistic Personality Inventory-40 (NPI-40) was subjected to three different studies by it’s authors in 1988 to analyze it’s construct validity, and has been used and examined in many studies to date.  Daniel Ames developed the NPI-16, a further shortened version based on the NPI-40.

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Aligning theoretical framework, gathering articles, synthesizing gaps, articulating a clear methodology and data plan, and writing about the theoretical and practical implications of your research are part of our comprehensive dissertation editing services.

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Robert Raskin & Howard Terry

Reliability and Validity

In Raskin & Terry (1988), alpha composite reliability scores of .83, .74, .80, and . 90 were calculated for the Narcissistic Personality Inventory.  For a pdf copy of the entire study, see the link in the References section at the bottom of this page.

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Statistics Solutions consists of a team of professional methodologists and statisticians that can assist the student or professional researcher in administering the survey instrument, collecting the data, conducting the analyses and explaining the results.

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Raskin, R., & Terry, H. (1988). A principal-components analysis of the Narcissistic Personality Inventory and further evidence of its construct validity. Journal of Personality and Social Psychology, 54, 890–902.

Raskin, Robert N., and Calvin S. Hall. (1979). “A Narcissistic Personality Inventory.” Psychological Reports 45.2 (1979): 590-590.