How to Identify Narcissism With 13 Items? Validation of the German Narcissistic Personality Inventory–13 (G

Four studies investigated the construct validity of the brief version of the German Narcissistic Personality Inventory–13 (G-NPI-13). Study 1 (N = 603) confirmed the three-factor structure of the G-NPI-13 and its associations with the NPI-40 and the NPI-16. In Study 2 (N = 438), the convergent and discriminant validity of the G-NPI-13 was analyzed by investigating its relationships with the “Big Five,” self-esteem, and mental health variables (depression, anxiety, stress symptoms; life satisfaction, happiness, social support). Study 3 (N = 118) provided further support for the convergence between the G-NPI-13 and the NPI-40 by investigating their associations with vulnerable narcissism, self-monitoring, and mental health. In Study 4 (N = 82), the 1-year test–retest reliability (three measurement time points) of the G-NPI-13 was investigated. Taken together, the G-NPI-13 is a valid, reliable, and economical instrument for measuring the personality trait narcissism. Possible practical applications and limitations of the G-NPI-13 are discussed