Other lines of evidence have suggested unique relationships between certain dimensions of impulsivity and distinct aspects of problem alcohol use. MacKillop (2007) found that problem drinkers scored higher than social drinkers on several measures of impulsivity, including the EIQ and the STPI but not on a delay discounting task. These findings suggest that alcohol misuse in college students may be related in particular to non-planning, a dimension that may not be captured in the discounting procedure. Magid, MacLean, & Colder (2007) found that different personality traits were related to alcohol use as compared to alcohol problems. In a sample of 310 college students, they found that impulsiveness, measured using the Impulsiveness Monotony Avoidance scale (IMA; Schalling, 1978), was related to alcohol problems, whereas a different scale, measuring sensation seeking, was related to alcohol use (Magid, MacLean, & Colder, 2007). In a separate study, Magid & Colder (2007) examined the UPPS Impulsive Behavior Scale (Whiteside & Lynam, 2001) in relation to alcohol use and alcohol-related problems in 267 undergraduates. Of the four factors they identified on this scale, sensation seeking and
