SPATIAL DEFICIT IN FAMILIAL LEFT-HANDED CHILDREN

Abstract

Familial left-handed children who presumably have bilateral representation of language ability should show an impairment in spatial ability. Children, whose average age was 8 yr and of whom 22 were right-handed, 11 familial left-handed and 11 non-familial left-handed, were tested on verbal subtests of the Wechsler Intelligence Scale for Children-Revised, i.e., vocabulary and similarities and on spatial subtests, i.e., block design and object assembly. Spatial ability of familial left-handed children was not worse than their verbal ability. Familial left-handers were apparently worse in spatial ability than right-handers.