A test of the construct validity of the Five-Factor Narcissism Inventory

The Five-Factor Narcissism Inventory (FFNI) is a new self-report measure that was developed to assess traits associated with grandiose and vulnerable narcissism from a Five-factor model (FFM) perspective. In a sample of undergraduates (N = 283), the relations among the FFNI scales, grandiose and vulnerable dimensions, and an array of relevant criteria were examined including self- and informant reports of the Big Five domains, measures of the Dark Triad, ratings of the interpersonal circumplex, externalizing and internalizing behaviors and symptoms, and romantic and attachment styles. The FFNI grandiose and vulnerable dimensions demonstrated good convergent and criterion validity. The FFNI grandiose and vulnerable dimensions manifested converging (e.g., disagreeableness, low love/communion, psychopathy, Machiavellianism, Ludus/Manic love styles) and diverging (e.g., neuroticism, extraversion, dominance, externalizing, internalizing, attachment anxiety) relations in a manner largely consistent with predictions. The FFNI joins the Pathological Narcissism Inventory as a measure that can simultaneously assess both grandiose and vulnerable dimensions of narcissism.