Table 2.

Regions of neural activation for friends and disliked-peer whole-brain t contrasts controlled for the percentage of behavior of interest

Brain region	L/R	Voxels	z	MNI coordinates
				x y z
Prosocial choices
Friend > Disliked Peer
Putamen	L	160	3.92	−30 −18 0
			3.77	−24 −9 −6
			3.50	−39 −15 −6
pTPJ–IPL	L	297	3.88	−48 −48 48
			3.49	−27 −57 42
			3.26	−36 −60 45
pTPJ–IPL	R	149	3.23	45 −57 45
			3.19	36 −72 51
			3.16	42 −51 39
Inferior frontal gyrus–Rolandic operculum	R	121	3.73	51 6 18
			3.55	48 −6 15
			3.31	36 0 18
Friend > Unfamiliar Peer
pTPJ–IPL	L/R	594	3.86	9 −75 45
			3.55	−33 −69 42
			3.45	−42 −54 42
pTPJ–IPL	R	277	3.84	36 −69 45
			3.67	51 −42 54
			3.59	45 −54 57
Selfish choices
Disliked Peer > Friend
Middle temporal gyrus–superior temporal sulcus	L	487	4.63	−66 −36 0
			4.46	−66 −30 −6
			4.01	−57 −18 −15
Putamen		142	3.78	24 3 −6
			3.46	30 −3 −24
			3.40	27 −6 −12
Postcentral gyrus–precentral gyrus		2081	4.58	45 −21 48
			4.38	−12 −27 60
			4.30	−48 9 51
Middle temporal gyrus	R	164	4.15	60 −63 0
			3.71	48 −60 6
			3.26	54 −57 12
Occipital gyrus	L	244	3.87	−15 −90 33
			3.26	−9 −78 15
			3.19	−30 −87 24
Lingual gyrus		423	3.79	24 −51 0
			3.70	12 −36 −3
			3.69	21 −60 15

Note. MNI = Montreal Neurological Institute; pTPJ = posterior temporoparietal junction; IPL= inferior parietal lobule. Analyses are conducted using FWE cluster-correction at p < .05, with a cluster-forming threshold of p < .005