The Swiss psychologist Jean Piaget is generally considered to be the founder of modern developmental psychology. This book, first published in 1988, provides a conceptual critique of six of Piaget's central, earlier works, including his account of the child's conception of the world, the development of morality, and the origins of intelligence in infancy. Sugarman's detailed, step-by-step analysis of some of Piaget's major arguments shows exactly where, and why, they fail. Through the same analysis she suggests the alternative lines of inquiry that might result in a clearer and more basic understanding of the child's mind and of the origins of adult thought.