Oxford Handbook of Impulse Control DisordersImpulsivity, to varying degrees, is what underlies human behavior and decision making processes. As such, a thorough examination of impulsivity allows us to better understand modes of normal behavior and action as well as a range of related psychopathological disorders, including kleptomania, pyromania, trichotillomania, intermittent explosive disorder, and pathological gambling disorders grouped under the term impulse control disorders (ISDs). Recent