Piaget decided to study children in 1920 while working in the Binet Laboratory in Paris. There, his assignment was to construct an intelligence test for children. At first he found this work very boring-he had little interest in scoring children’s answers right and wrong, as intelligence testing requires. However, Piaget soon became interested in the younger children’s responses, especially their wrong answers. Their mistakes, he found, fit a consistent pattern that suggested their thinking might have a character all its own. Young children, Piaget speculated, might not simply be “dumber” than older children or adults, but might think in an entirely different way (Ginsburg & Opper, 1988, p. 3).