Hypothesis: Compared to typically-developing children, the investigators expect that children with DCD will show smaller cerebellar volume, differences in microstructural development in motor, sensory and cerebellar pathways, decreased strength of connectivity in resting, default mode, and motor networks. Children with DCD+ADHD will show poorer function in frontal and parietal areas compared to children with DCD (Langevin et al., 2014).