Table 1.

Brain areas where structural integrity predicts longitudinal growth in numerical abilities ^{^a}

Region	Brodmann's area	Number of voxels (mm³)	Peak Z-score	Peak MNI coordinates (mm)			Math Reasoning	Word Reading	Reading Comprehension	Working memory
Region	Brodmann's area	Number of voxels (mm³)	Peak Z-score	x	y	z	Math Reasoning	Word Reading	Reading Comprehension	Working memory
VTOC
Left FG	37	97	3.62	−36	−58	−12	p = 0.14, r = 0.13	p = 0.99, r = −0.34	p = 0.14, r = 0.12	p = 0.84, r = −0.2
PPC
Left IPS	39	161	3.78	−42	−40	54	p = 0.78, r = −0.19	p = 0.93, r = −0.24	p = 0.67, r = −0.14	p = 0.98, r = −0.29
PFC
Left DLPFC	46	215	3.97	−52	41	13	p = 0.54, r = −0.09	p = 0.60, r = −0.11	p = 0.84, r = −0.21	p = 0.44, r = −0.04
Left DLPFC	45	92	3.5	−40	27	6	p = 0.97, r = −0.27	p = 0.52, r = −0.07	p = 0.92, r = −0.24	p = 0.74, r = −0.18
Left VLPFC	10	516	4.10	−27	45	−8	p = 0.22, r = −0.07	p = 0.50, r = −0.06	p = 0.84, r = −0.21	p = 0.23, r = 0.07
Right pre/primary motor cortex	6	698	4.14	34	8	46	p = 0.007, r = 0.34	p = 0.32, r = 0.01	p = 0.05, r = 0.22	p = 0.67, r = −0.14
Visual cortex
Right cuneus	17	551	4.27	18	−96	13	p = 0.25, r = −0.05	p = 0.45, r = −0.05	p = 0.11, r = 0.16	p = 0.95, r = −0.27
Right cuneus	18	116	3.79	22	−94	25	p = 0.08, r = −0.55	p = 0.85, r = −0.19	p = 0.93, r = −0.24	p = 0.93, r = −0.24

↵ ^a Clusters in which gray matter volume is predictive of numerical gains. Math and reading measures are subtests from the WIAT-II. The Working Memory Test Battery for Children was used to measure working memory.