Table 5.

Means, standard deviations and t values in abstinent alcohol-dependent people (“abstainers”) and healthy individuals (“comparison group”) of other factors such as intelligence, attention, depression, anger expression and hostility that may affect decision making, measured with the Iowa Gambling Task

	Abstainers (n = 40)	Comparison group (n = 40)
	M (SD)	M (SD)	t value
MWT-B
IQ – premorbid	114.60(14.82)	109.45(12.58)	1.68
d2
Processing speed	62.65(33.77)	84.50(18.66)	3.58**
Rule compliance	62.40(26.72)	51.48(26.27)	−1.84
Quality of performance	67.38(29.88)	81.28(20.55)	2.43*
BDI-II
Depression	8.63(8.32)	5.93(5.40)	1.72
STAXI
State anger	1.25(0.41)	1.14(0.37)	1.27
Trait anger	1.90(0.51)	1.86(0.48)	0.38
BDHI – Factors
Assault	0.34 (0.21)	0.29 (0.24)	1.01
Indirect hostility	0.42 (0.27)	0.48 (0.22)	−1.20
Irritability	0.43 (0.27)	0.45 (0.29)	−0.30
Negativism	0.51 (0.29)	0.45 (0.32)	0.89
Resentment	0.26 (0.25)	0.18 (0.20)	1.60
Suspicion	0.38 (0.25)	0.26 (0.23)	2.21*
Verbal hostility	0.46 (0.17)	0.44 (0.20)	0.51
Guilt	0.43 (0.21)	0.33 (0.20)	2.36*

M mean; SD standard deviation

MWT-B multiple-choice word test, BDI-II Beck Depression Inventory II, STAXI State-Trait Anger Expression Inventory, BDHI Buss-Durkee Hostility Inventory

p > .05; * p <. 05; ** p < .01