Abstract
This study examined the motor development of children with IQs of 130 or more in comparison with children with IQs less than 130. Those of high intelligence had slightly better fine but not gross motor ability. They also had higher mean birth weights but were not longer at birth or taller or heavier at other ages. They did, however, have larger head circumference measurements at birth and at ages 3, 5, 7 and 9 years.