Citation

Pechorro P, Gentile B, Ray JV, Nunes C, GonÇalves RA. Psychol. Crime Law 2016; 22(5): 495-511.

Copyright

(Copyright © 2016, Informa - Taylor and Francis Group)

DOI

10.1080/1068316X.2016.1168421

PMID

unavailable

Abstract

The aim of the present study was to assess the psychometric properties of the Narcissistic Personality Inventory (NPI) and two of its short forms (NPI-16 and NPI-13) among a Portuguese sample of male incarcerated juvenile offenders (N = 221). Of these, only the NPI-13 short version demonstrated a good fit in terms of its factor structure. The NPI-13 also showed promising psychometric properties in terms of its internal consistency, convergent validity, discriminant validity, and criterion-related validity. Statistically significant associations were found with age of crime onset, crime seriousness, conduct disorder symptoms, alcohol abuse, and cannabis use. These findings justify the use of the NPI-13, especially its Entitlement/Exploitativeness dimension, among incarcerated male youths.

Language: en

Keywords

Assessment; Narcissistic Personality Inventory; psychometric properties; young offenders