||Impulsivity is a shared trait between Antisocial and Borderline Personality Disorders. This link could explain some of the overlap and account for the high comorbidity rates between these two disorders. A closer examination at impulsivity reveals four related yet distinct subtypes. The current study aimed to differentiate between borderline and antisocial traits by using these four subtypes of impulsivity. Five-hundred eighty undergraduate participants completed the Personality Assessment Inventory (PAI; Morey, 1991) to assess the level of borderline and antisocial traits and the NEO Personality Inventory, Third Edition (NEO-PI-3; McCrae and Costa, 2010) to assess the level of each type of impulsivity. Results indicate that three of the four types of impulsivity are shared by individuals who score high on the Borderline and/or Antisocial Features scales of the Personality Assessment Inventory, therefore indicating that the types of impulsivity were not able to differentiation between the disorders.