Table 6.

Role of Emotions in Decision-Making

VARIABLES	Drinker-driver Groups
	Total	0	1–4	5+	0 vs. 5+	0 vs. 1–4	1–4 vs. 5+
	Means	Means	Means	Means	t-test -	t-test -	t-test
Impulsivity indexa	26.25	25.46	27.32	29.53	5.17**	4.74**	−2.47*
I do things I later regret	2.56	2.43	2.75	3.11	−4.54**	−4.36**	−2.25*
I act on impulse	2.65	2.53	2.79	3.14	−4.15**	−3.59**	−2.21*
I finish what I start	1.94	1.88	2.01	2.13	−2.25*	−2.43*	−0.88
I do things on spur of moment	3.17	3.10	3.26	3.52	−2.98**	−2.28*	−1.84
I plan for the future	1.93	1.89	1.95	2.23	−3.04**	−0.96	−2.46*
I am not a worrier	2.69	2.71	2.66	2.61	0.66	0.71	0.29
I do not consider consequences	2.23	2.12	2.35	2.84	−5.98**	−3.72**	−3.57**
I control my angry feelings	2.18	2.12	2.29	2.25	−1.16	−3.05**	0.31
I ignore little jobs	2.50	2.42	2.61	2.77	−2.36*	−2.58**	−0.99
I fly off the handle	2.09	2.03	2.20	2.28	−2.05*	−2.85**	−0.54
I never get organized	2.35	2.30	2.46	2.44	−1.02	−2.36*	0.14
I rarely make hasty decisions	2.65	2.64	2.66	2.83	−1.38	−0.37	−1.20

^**Significant at the 1 percent level

^*Significant at the 5 percent level

^aEach of the individual questions used to construct the index is coded on a scale from 1 to 5, with 1 being the least impulsive response and 5 being the most impulsive response.