associated with the development of white matter circuitry in bilateral frontal, occipito-parietal, and occipito-temporo-parietal regions (Schmithorst et al. 2005). The reading skills of children and adolescents improve with white matter changes in the internal capsule, corona radiata, and temporo-parietal regions (Beaulieu et al. 2005; Nagy et al. 2004; Niogi and McCandliss 2006; Qiu et al. 2008), and greater left lateralization of the arcuate fasciculus fibers is associated with improved phonological processing and receptive vocabulary (Lebel and Beaulieu 2009). Better visuospatial construction and psychomotor performance are associated with high corpus callosum FA (Fryer et al. 2008). Visuospatial working memory capacity is linked to a fronto-intraparietal network (Olesen et al. 2003), whereas delayed visual memory is linked to temporal and occipital FA (Mabbott et al. 2009). Verbal memory proficiency is related to decreased MD and decreased RD in left uncinate fasciculus and with parietal and cerebellar white matter integrity (Mabbott et al. 2009).
