Three aspects of disinhibition/behavioral undercontrol were assessed: types of impulsivity, sensation seeking and aggression. The Barratt Impulsiveness Scale, Version 11 (BIS-11; Patton et al., 1995) is a 30-item self-report questionnaire with items rated on a four-point scale, including three second-order factors: attentional (α = .80), motor (α = .69) and nonplanning impulsiveness (α = .76). In the disinhibition subscale of the Sensation Seeking Scale, Form V (Zuckerman, 1994) participants are presented two descriptions and are asked to report which pertains most closely to them (e.g., “I like wild, uninhibited parties” or “I prefer quiet parties with good conversation”). Each response indicating sensation seeking was scored “1” and the sum was taken. To prevent criterion contamination (Darkes et al., 1998), two items directly pertaining to alcohol were removed, leaving an 8-item measure (α = .67). The Buss-Perry Aggression Questionnaire (1992) contains 29 items on a five-point scale, including four subscales: hostility (α = .84), anger (α = .78), verbal (α = .77) and physical aggression (α = .82).
