Fig. 4From: Impulsivity mediates the association between narcissism and substance-related problems beyond the degree of substance use: a longitudinal observational studyParallel mediation model linking antagonistic narcissism to substance-related problems while controlling for the degree of substance use. Note: N = 123. Substance-related problems were assessed at T2, all other variables at T1. * p <.05, ** p <.01Back to article page