Table 4. Structural Phenotype Reliability.

MRI Variable	Pearson Correlation (r)
Note: All correlations are significant at the 0.01 level (2-tailed); MRI variable definitions detailed in Supplementary Appendix D. Right and Left refer to the right and left hemisphere.
Global
Intracranial Volume	0.999
Brain Volume (including ventricles)	0.996
Brain Volume (without ventricles)	0.996
Right Cortical Thickness	0.894
Left Cortical Thickness	0.899
Right Cortical Surface Area	0.998
Left Cortical Surface Area	0.999
Regional Volumes
Posterior Corpus Callosum	0.992
Middle Posterior Corpus Callosum	0.956
Central Corpus Callosum	0.952
Middle Anterior Corpus Callosum	0.948
Anterior Corpus Callosum	0.980
Right Amygdala Volume	0.837
Left Amygdala Volume	0.931
Right Hippocampal Volume	0.968
Left Hippocampal Volume	0.959
Regional Thicknesses
Right Medial Prefrontal	0.746
Left Medial Prefrontal	0.779
Right Caudal Middle Frontal	0.820
Left Caudal Middle Frontal	0.837
Right Lateral Occipital	0.902
Left Lateral Occipital	0.872
Right Lingual	0.842
Left Lingual	0.845
Right Caudal Anterior Cingulate	0.765
Left Caudal Anterior Cingulate	0.849
Right Posterior Cingulate	0.803
Left Posterior Cingulate	0.878