Table 1 Correlation coefficient and model fitness of each brain region.

ROI	rMZ	rDZ	Parameter estimates with A, C, E influences on region Pvalue
ROI	rMZ	rDZ	A	95%CI	C	95%CI	E	95%CI	NO A	NO C	NO AC
L frontal	0.83	0.3	0.88	(0.63; 0.93)	0	(0; 0.24)	0.12	(0.07; 0.24)	<0.0001	1	<0.0001
R frontal	0.85	0.29	0.89	(0.65; 0.94)	0	(0; 0)	0.11	(0.06; 0.21)	<0.0001	1	<0.0001
L parietal	0.84	0.32	0.85	(0.53; 0.92)	0	(0; 0.3)	0.15	(0.08; 0.28)	<0.0001	1	<0.0001
R parietal	0.83	0.42	0.84	(0.39; 0.91)	0	(0; 0)	0.16	(0.09; 0.3)	<0.0001	1	<0.0001
L occipital	0.64	0.36	0.7	(0.11; 0.83)	0	(0; 0)	0.3	(0.17; 0.54)	0.02	1	<0.0001
R occipital	0.72	0.29	0.7	(0.21; 0.83)	0	(0; 0.4)	0.3	(0.17; 0.52)	0.01	1	<0.0001
L cingulate gyrus	0.48	0.29	0.48	(0; 0.68)	0	(0; 0.51)	0.52	(0.32; 0.84)	0.21	1	0.01
R cingulate gyrus	0.63	0.28	0.61	(0; 0.77)	0	(0; 0.51)	0.39	(0.23; 0.65)	0.06	1	<0.0001
L medial temporal	0.67	0.4	0.43	(0; 0.78)	0.21	(0; 0.67)	0.36	(0.22; 0.6)	0.19	0.57	<0.0001
R medial temporal	0.55	0.45	0.09	(0; 0.68)	0.42	(0; 0.66)	0.49	(0.3; 0.72)	0.79	0.24	<0.0001
L lateral temporal	0.67	0.5	0.72	(0.17; 0.87)	0.04	(0; 0.49)	0.24	(0.13; 0.44)	0.01	0.87	<0.0001
R lateral temporal	0.61	0.19	0.7	(0.3; 0.84)	0	(0; 0.27)	0.3	(0.16; 0.58)	0.01	1	<0.0001
Whole brain	0.86	0.39	0.89	(0.6; 0.94)	0	(0; 0.29)	0.11	(0.06; 0.20)	<0.0001	1	<0.0001
L hemisphere	0.85	0.37	0.88	(0.62; 0.94)	0	(0; 0)	0.12	(0.06; 0.19)	<0.0001	1	<0.0001
R hemisphere	0.85	0.36	0.88	(0.63; 0.94	0	(0; 0)	0.12	(0.06; 0.19)	<0.0001	1	<0.0001

The whole brain is divided into 12 brain region, A: additive genetic effects; C: common environmental effects; E: individual-specific environmental effects. CI: confidence interval. No A: CE model, hypothesis: there is no additive genetic effects; no C: AE model, hypothesis: there is no common environmental effects; no AC: E model, hypothesis: there is only individual-specific environmental effects.

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