How "differences" between the two sides of the brain (or "laterality") relate to level of function are important components of theories of the origin and purpose of hemispheric asymmetry, although different measures show different relationships, and this heterogeneity makes discerning any underlying relationships a difficult…

Discusses the relevance of the study of the neurobiology of cognitive development, for an understanding of both the neural bases and the nature of cognition. Also considered are the age at which hemisphere specialization first appears and whether hemisphere specialization changes over time. (PCB)

This literature review examines the research on the use of right and left hands in the reading of braille. Results suggest that right-handed people may read braille more accurately with the left hand. Studies have also found differences between girls and boys and changes over the developmental period. (DB)