The document summarizes Kohlberg's theory of moral development, which was developed by psychologist Lawrence Kohlberg based on Jean Piaget's work. Kohlberg's theory proposes that morality develops through six stages from childhood through adulthood, as individuals progress from focusing on obedience and punishment, to interpersonal relationships, to societal laws and norms, and finally to universal ethical principles. The theory aims to understand how individuals distinguish between right and wrong as they mature.