Table 3.

Positive versus negative comparisons, within each age group.

Location of peak voxel	MNI coordinates			Cluster size	Peak t
	x	y	z
FIFTH GRADERS POSITIVE > NEGATIVE NUMBERS
R inferior frontal gyrus	12	38	−20	89	5.92
R superior frontal gyrus	18	38	58	54	5.7
L superior, middle frontal gyrus	−21	38	58	148	5.61
L inferior frontal gyrus	−60	29	−2	121	5.6
L superior frontal gyrus	−12	−10	67	122	5.46
R inferior parietal lobule	42	−70	46	58	5.3
L superior frontal gyrus	−18	44	−17	101	4.97
R middle frontal gyrus	48	56	10	54	4.69
R inferior, middle frontal gyrus	60	14	31	214	4.51
R superior frontal gyrus	−9	62	1	68	4.01
L inferior parietal lobule	−42	−64	40	49	3.76
FIFTH GRADERS NEGATIVE > POSITIVE NUMBERS
R inferior parietal lobule	42	−34	28	49	5.2
SEVENTH GRADERS POSITIVE > NEGATIVE NUMBERS
None
SEVENTH GRADERS NEGATIVE > POSITIVE NUMBERS
L inferior frontal gyrus	−33	23	−11	47	4.01