For 10 points, name this Swiss psychologist who posited sensori-motor, pre-operational, concrete operational, and formal operational as his four stages of cognitive development.
This psychologist theorized the process of "equilibration" as achieving a balance between "assimilation" and "accommodation," both of which utilize mental structures paired with the physical means of acquiring knowledge termed "schema." One of his models proposes that a child can think logically but only in terms of material objects from the ages of 7-11. For 10 points, name this Swiss psychologist who posited sensori-motor, pre-operational, concrete operational, and formal operational as his four stages of cognitive development.
This psychologist theorized the process of "equilibration" as achieving a balance between "assimilation" and "accommodation," both of which utilize mental structures paired with the physical means of acquiring knowledge termed "schema.
Jean {Piaget}