The common thread running through all three traits of The Dark Triad (Machiavellianism, subclinical narcissism, and subclinical psychopathy) is high selfishness and low disagreeableness. Each member of The Dark Triad is differentially related to different forms of impulsivity, however. Scott J. Dickman differentiates between two different forms of impulsivity: functional impulsivity and dysfunctional impulsivity. Functional impulsivity is related to idea generation, enthusiasm, adventurousness, and the ability to make quick decisions. On the other hand, dysfunctional impulsivity is related to erratic disorderliness, distraction, and inaccurate decision making.