The study of human laterality or cerebral asymmetry has attracted particular attention in research involving such areas as pattern recognition and language and motor skills. Brings readers up to date on the rapid progress in this area of neuropsychology. It describes the latest research on laterality in nonhuman species, going on to examine clinical, commissurotomy and normative studies of human cerebral asymmetry. Explores theoretical models of hemispheric specialization and interaction, language in the °minor° (right) hemisphere and language, tool use, dextrality and bipedalism in human evolution. Succeeding chapters discuss handedness, sex and developmental aspects, particularly individual and developmental differences in cognitive abilities. Recent popular generalizations concerning °hemisphericity° are also described.