Table 1.

Sample demographics, symptoms, and performance.

	N	Age (y)	FSIQ	SWANinatt	SWANhyper	WRAT	Scan performance			Prep performance
Acc	RT (s)	RTsd	Acc	RT (s)	RTsd
N = 30
ADHD	15	13.7	104	10.7⁎	5.1⁎	113	.75	1.2	.49	.77⁎	1.3	.43
TD	15	14.1	111	− 12.7⁎	− 18.8⁎	123	.80	1.1	.43	.88⁎	1.2	.37
N = 21
ADHD	8	14.1	105	7.3⁎	− 0.3⁎	115	.80	1.1	.43	.82	1.2	.38
TD	13	14.3	112	− 13.1⁎	− 20.1⁎	124	.82	1.1	.45	.89	1.2	.38

FSIQ, full-scale IQ; SWAN, Strengths and Weaknesses of ADHD symptoms and Normal Behavior Scale with (inatt) inattentive and (hyper) subscales (higher SWAN scores indicate worse functioning); WRAT, wide range achievement test (verbal); Acc accuracy; RT/sd reaction time and its standard deviation; SCAN fMRI-session; PREP pre-fMRI session.

^⁎p < .01 significant group difference.