Table 5.

Mean comparisons based on alcohol dependence, cocaine dependence, and depression with neurocognitive (NC) functioning (N = 38).

Neurocognitive domain	Diagnosis of alcohol dependence				Diagnosis of cocaine dependence				Lifetime diagnosis of depression
	Dependent (n = 13)	Non-dependent (n = 25)			Dependent (n = 17)	Non-dependent (n = 21)			Depressed (n = 13)	Non-depressed (n = 25)
	M (SD)	M (SD)	t-Test	Cohen's d	M (SD)	M (SD)	t-Test	Cohen's d	M (SD)	M (SD)	t-Test	Cohen's d
Global NC functioning	37.9 (6.5)	42.9 (5.8)	2.4*	0.68	39.6 (6.8)	42.5 (6.0)	1.4	0.46	39.8 (8.8)	41.9 (4.9)	0.82	0.32
Learning	33.1 (12.2)	34.4 (9.2)	0.4	0.06	34.6 (10.8)	33.4 (9.8)	−0.4	0.05	33.9 (13.5)	34.0 (8.3)	0.03	0.00
Memory	32.3 (12.0)	36.1 (10.6)	1.0	0.17	34.3 (11.8)	35.2 (10.8)	0.3	0.04	34.4 (13.7)	35.0 (9.8)	0.16	0.03
Executive functioning	37.2 (5.9)	44.5 (6.7)	2.9*	1.13	38.6 (6.7)	43.6 (6.6)	2.3*	0.75	40.6 (7.4)	41.8 (6.9)	0.44	0.17
Motor	34.2 (9.0)	43.8 (7.6)	3.4*	1.19	36.4 (9.6)	43.5 (8.0)	2.4*	0.81	36.3 (8.6)	42.6 (9.2)	1.9	0.70
Attention/working Memory	40.4 (7.3)	44.0 (8.3)	1.3	0.45	40.8 (8.3)	44.3 (7.7)	1.3	0.44	43.0 (8.8)	42.9 (7.8)	0.12	0.01
Verbal fluency	44.5 (8.7)	45.0 (9.9)	0.18**	0.05	45.3 (8.7)	45.3 (10.2)	0.3	0.00	43.7 (12.8)	45.4 (7.6)	0.53	0.18
Processing speed	43.2 (5.8)	50.7 (8.5)	2.8*	0.97	45.7 (9.3)	50.1 (7.3)	1.6	0.53	46.8 (11.6)	48.8 (6.4)	0.72	0.24

Note. Mean and Standard Deviations (M, SD) based on average T Scores; T-Scores < 40 = NC impairment; Diagnosis assessed using the Composite Diagnostic Interview (CIDI).

^*p < 0.05.

^**p < 0.001.