The current study investigated the moderator effects of gender and gender role on the relationships between two distinct measures of impulsivity, and antisocial and borderline personality features in a sample of 249 undergraduates. A self-report measure of impulsivity was used to assess the participant's tendency to act without considering the consequences (i.e., the Motor Impulsiveness Scale of Barratt Impulsivity Scale – 11), a behavioral task measure was used to assess behavioral disinhibition (i.e., Stop Task stop signal reaction time), and the SCID-II was used to measure borderline and antisocial personality features. Results support the idea that antisocial and borderline personality features are gender-differentiated manifestations of behavioral disinhibition. Specifically, behavioral disinhibition is related to antisocial personality features in males and to borderline personality features in females. Future studies are needed to replicate these findings and to examine what accounts for these gender differences.