WAIS performance in brain-damaged left- and right-handers.

WAIS performance was compared in 35 pairs of left- and right-handed subjects who had been individually matched for lateralization, cause of brain damage, age, education, and gender. WAIS results were similar in the two groups as well as in two subgroups of subjects with unilateral brain damage. No differences between the unilateral groups were found to support the hypothesis advanced by Levy and Nagylaki in 1972 that left-handers have inferior visual-spatial abilities.