Reliability, Validity and Invariance of the Narcissistic Personality Questionnaire for Children-Revised (NPQC-R)

Using confirmatory factor analysis, this study compared the 4-factor 18-item Narcissistic Personality Questionnaire for Children (NPQC) and the 2-factor, 12-item Narcissistic Personality Questionnaire for Children-Revised (NPQC-R). Support was found for the 2-factor structure of the 12-item NPQC-R using two independent adolescent school-based samples (n = 479 and n = 470). The 2-factor NPQC-R model (i.e., Superiority, Exploitativeness) showed a better fit in both adolescent samples than the alternative 4-factor NPQC model. There was strong support for NPQC-R's invariance across gender and age. The NPQC-R was found to have reasonable internal consistency estimates, test-retest reliability estimates, and adequate convergent and discriminant validity estimates. Collectively, these results support the utility of the NPQC-R as a measure of narcissism in children and adolescents.