Table 2. Overview of Brain Regions Used to Test for Group Differences.

	Region	Size (Voxel)	Side	Z	X	Y	Z	Omnibus-Test	Pairwise-Comparison
Anticipation	Frontal pole	86	R	1.63	30	36	36	F(2,307)=8.1; p<0.001*	(A=S)>C
	Anterior Cingulate Cortex	89	L/R	2.24	-4	16	30	F(2,331)=10.0; p<0.001*	(A=S)>C
	Cerebellum	91	L	3.91	-26	-58	-28	F(2,306)=8.5; p<0.001*	A>(S=C)
ROI	Nucleus Accumbens		L/R					F(2,333)=1.0; p<0.1	A=S=C
Receipt	Occipital cortex	90	L	2.14	-44	-64	2	F(2,287)=9.3; p<0.001*	(A=S)>C
	Orbitofrontal cortex	100	L	2.87	-30	26	-18	F(2,335)=9.7; p<0.001*	(A=S)>C
	Orbitofrontal cortex	127	L	4.64	-22	4	-24	F(2,288)=20.0; p<0.001*	A>(S=C)
ROI	Nucleus Accumbens		L/R					F(2,332)=3.1; p<0.04*	A>C;A=S;S=C

Note: Regions comprised significant clusters (cluster p<0.025) from the attention-deficit/hyperactivity disorder (ADHD)–control comparison and one region of interest (ROI). Indicated p-values are corrected for non-independence. A = ADHD; C = control participants; L = left; R = right; S = unaffected siblings.