Heat map of phenotypic correlations among reliable BOLD ROI measures. Phenotypes that are most highly positively correlated are shown in orange–red. Specific r values are presented in Supplementary Table 2. Correlations within the cerebellum are much higher than correlations within the cerebrum, most likely due to the closer spatial proximity. Correlations are highest among equivalent contralateral ROIs, and among ipsilateral ROIs from the same anatomical region. Correlations are the highest among cerebral areas with other cerebral areas, and among cerebellar areas with other cerebellar areas. Overall, there is a stronger correlation between left cerebellar and right cerebral regions, and between right cerebellar and left cerebral regions, consistent with a cross-over between hemispheres for the cerebrum, but not the cerebellum. The highest correlations between the cerebellum and the cerebrum are between right lobule VIIa Crus I and left middle frontal gyrus (0.27), and between left lobule VI and right precentral gyrus (0.24).