The development of visually guided reaching in monkeys reared without sight of the hands

In a modified replication of a study by Held and Bauer, two monkeys were reared without sight of the hands. The animals were taught to reach toward a dowel stick they could see. When the hands were uncovered, neither prolonged hand watching nor inability to reach toward objects was observed. The animals reached toward gross objects on the first day and gradually improved. Thus, visual deprivation of the sight of the hands would not appear to hinder visually guided reaching as much as the Held-Bauer study would indicate.