Jean Piaget is one of the greatest names in psychology. A knowledge of his ideas is essential for all in psychology and education. Sociological Studies is one of his major works to remain untranslated. Now an international team of Piaget experts has got together to ensure that this important work is available in English. This classic text, exploring the role of social experience in the development of understanding, shows the general perception of Piaget as someone who took insufficient account of social factors in psychology to be false.