ISSN : 1229-0718
Various handedness measures were used to investigate the relationship between hand preference and actual performance by the left and right hands (bimanual actirity. unimanual speed and dexterity. unimanual strength). The primary task was the Critical Angle Board. a simultaneous bimanual copying task. Subjects with a strong hand preference (either right or left) showed less interference from controlateral activity of the nondominant hand than ambidextrous subjects Overall, speed and dexterity of the nondominant hand relative to the dominant hand was greater in older subjects, while preference for the dominant hand in right handers increased with age.