Objective: The study aimed to investigate the correlation between impulsiveness and the antisocial personality disorder among short-term prisoners. Method: The impulsiveness was diagnosed by the Barratt Impulsiveness Scale (BIS). Results: Short-term prisoners with antisocial personality disorder scored significant higher marks on the BIS total scale than those without any personality disorder. In detail, they scored higher marks on each subscale regarding attentional, motor and nonplanning impulsiveness. Moderate and high effects were calculated. Conclusion: It is to be considered to regard impulsivity as a conceptual component of antisociality.