EXPERIMENTAL EXAMINATION OF SOME OF PIAGET'S SCHEMATA CONCERNING CHILDREN'S PERCEPTION AND THINKING, AND A DISCUSSION OF THEIR EDUCATIONAL SIGNIFICANCE*

S ummary . This paper describes four researches designed to test the substance of some of Piaget's schemata for the mental development of children. The first two investigations are concerned with haptic perception and spatial relationships in drawing, the third is devoted to the child's logical judgments, and the fourth to his moral judgments. Large numbers of children were put in Piaget's situations, the numbers ranging from thirty‐two to...