DISTRIBUTIONS OF HAND PREFERENCE AND HAND SKILL ASYMMETRY IN PRESCHOOL-CHILDREN - THEORETICAL IMPLICATIONS

We describe the distributions of hand skill asymmetry for the Peg-moving task [1] and the Graphic test [17] among 765 preschool children. A single normal component was observed for the Peg-moving task, but two normal components for the Graphic test, which corresponded primarily to the right- and left-handed children. Hand Preference and Graphic test hand skill asymmetry were age-dependent, but there was no age effect on the PMT hand skill asymmetry. Results are discussed in relation to the Annett's Right Shift theory.