Not only is this a very small group from which little data could expect to be culled, but the children involved were also all from privileged backgrounds.
He was, reportedly, the only Swiss to be invited at the Sorbonne from 1952 to 1963.
He claimed infants transform all objects into an object to be sucked.
Multi-step procedures are common in the classroom setting, which makes reversibility a valuable skill in learning.
Piaget's theory of cognitive development proposes 4 stages of development.
Children's increase in playing and pretending takes place in this stage.