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This man claimed that "there are no innate ideas, in the Cartesian sense" in Biology and Knowledge and described intellectual development with his theory of "genetic epistemology." This man used beakers of water to test children's conception of conservation, and he described the understanding of the world through schema. He also tested children on whether things that can no longer be seen still exist, a concept known as "object permanence." Formal operational and sensorimotor are two of the four stages of the four-stage cognitive development model created by, for 10 points, what Swiss child psychologist?
This man claimed that "there are no innate ideas, in the Cartesian sense" in Biology and Knowledge and described intellectual development with his theory of "genetic epistemology.
Jean {Piaget}