Rachel K. Clifton, Darwin W. Muir, Daniel H. Ashmead, Marsha G. Clarkson
The issue examined was whether infants require sight of their hand when first beginning to reach for, contact, and grasp objects. 7 infants were repeatedly tested between 6 and 25 weeks of age. Each session consisted of 8 trials of objects presented in the light and 8 trials of glowing or sounding o...