Table 1.

Cognitive Domain Scores by Group

	Control (n=31)	Intact (n=50)	Impaired (n=53)	F-statistic df (2, 131)	Post-hoc t-test^
Processing Speed	59.6 (10.5)	52.4 (8.3)	34.3 (9.5)	82.16****	2<1<0
Attention/Vigilance	53.0 (9.0)	51.0 (8.9)	33.0 (10.6)	61.21****	2<1,0
Working Memory	53.4 (10.3)	55.3 (7.5)	35.6 (10.7)	63.03****	2<1,0
Verbal Learning	53.7 (10.1)	52.4 (9.8)	37.7 (6.5)	49.12****	2<1,0
Visual Learning	52.2 (8.5)	49.4 (9.0)	35.0 (10.7)	42.18****	2<1,0
Problem Solving	49.9 (8.7)	51.1 (9.1)	40.5 (8.6)	21.20****	2<1,0
Social Cognition	53.6 (10.7)	53.4 (9.6)	44.0 (11.3)	12.84****	2<1,0
COMPOSITE	55.7 (9.6)	53.4 (5.2)	28.8 (9.0)	162.53****	2<1,0

^{^}All reported post-hoc comparisons were significant after Bonferroni correction.

^****p<.0001