. Author manuscript; available in PMC: 2011 Nov 1.

Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2010 Nov;49(11):1155–1164.e1. doi: 10.1016/j.jaac.2010.08.008

Table 2.

Neuropsychological performance of children with Tourette Syndrome (TS), children with TS plus Attention-Deficit/Hyperactivity Disorder (ADHD), children with ADHD, and Unaffected Control Subjects

	TS		TS+ADHD		ADHD		Controls				Analysis
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	F	p	Significant Post Hoc Bonferroni Comparisons
Conners’ CPT
Errors of omission (%)	4.55	3.70	6.78	6.28	5.79	6.32	3.15	3.82	F_{(3, 208)}=5.08	.002	TS+ADHD = ADHD < NC
Errors of commission (%)	53.35	22.65	55.90	22.46	58.38	18.73	49.74	18.57	F_{(3, 208)}=1.90	.131
Reaction time (ms)	414.55	76.61	423.12	88.45	429.50	102.58	405.68	83.58	F_{(3, 208)}=0.80	.497
RT variability (SE)	11.76	5.90	13.81	6.50	15.02	8.57	10.13	5.92	F_{(3, 208)}=5.80	.001	TS+ADHD = ADHD < NC
Stroop
Golden Interference Score	168.57	77.25	171.63	75.57	180.41	77.11	140.91	62.34	F_{(3, 221)}=3.90	.01	ADHD < NC
Purdue
Dominant raw score^a	13.55	2.21	13.47	1.90	13.10	1.97	14.54	1.67	F_{(3, 231)}=6.73	.000	ADHD<NC
Nondominant raw score	12.53	1.89	12.64	1.97	12.19	2.24	13.27	1.64	F_{(3, 231)}=3.62	.014	ADHD<NC
Bimanual raw score	10.35	1.69	10.37	1.75	10.09	1.61	11.20	1.51	F_{(3, 231)}=5.88	.001	ADHD<NC
VMI
Beery Standard Score	100.44	15.59	92.89	14.26	88.65	14.21	98.63	14.81	F_{(3, 224)}=7.96	.000	ADHD < NC = TS

Note: ADHD =Attention-Deficit/Hyperactivity Disorder; CPT=Continuous Performance Test; NC=Normal Controls; RT=reaction time; SE=standard error; TS=Tourette Syndrome; VMI=Beery Visual Motor Integration Test;

Significant diagnosis by gender interaction effect F_(1,120)=4.12, p<0.05 revealed that boys but not girls with TS-only were impaired in their dominant hand Purdue performance.