The answer is Renée Baillargeon. She is an Alumni Well-known
Professor of Psychology at the University of Illinois Urbana-Champaign. She
specializes in the development of perception in infancy. She contends that
Piaget's discovery concerning infants' failure to understand object permanence
until 8–12 months old was engrained in a deficiency of motor ability as contrasting
to inadequate cognitive development.
