was composed of two highly correlated components (r = .52), one reflecting the tendency to act without thinking (Eysenck 1, alpha = .74) and the other the tendency to encounter problems when acting without thinking (Eysenck2, alpha = .51). We treated these as alternative measures of a single form of poor behavioral control. The sensation seeking items formed a separate single factor (alpha = .74). Total scores were calculated for each factor such that a higher score indicated more impulsive behavior.
