Postconventional morality refers to Kohlberg’s term for the 5th and 6th stages of Moral reasoning, in which moral judgments are based on social contracts and democratic law (Stage 5) or on universal principles of ethics and justice (Stage 6) In Kohlberg's stages of Moral reasoning, it is the most mature form of moral judgment. Moral decisions are based on an appreciation of the social contract that binds members of a social system and on personal values.