Pre-Conventional
(1-2) The pre-conventional level of moral reasoning is especially common in children, although adults can also exhibit this level of reasoning. Reasoners in the pre-conventional level judge the morality of an action by its direct consequences. The pre-conventional level consists of the first and second stage of moral development.
(1) Stage one, individuals focus on the direct consequences that their actions will have for themselves. For example, they think that an action is morally wrong if the person who commits it gets punished.
(2) Stage two espouses the what's in it for me position; right behavior being defined by what is in one's own best interest. Stage two reasoning shows a limited interest in the needs of others, but only to a point where it might further one's own interests, such as "you scratch my back, and I'll scratch yours." Concern for others is not based on loyalty or intrinsic respect in stage two.
(3-4) Conventional
The conventional level of moral reasoning is typical of adolescents and adults. Persons who reason in a conventional way judge the morality of actions by comparing these actions to social rules and expectations. The conventional level consists of stages three and four of moral development.
(3) In Stage three, individuals whose moral reasoning is in stage three seek approval from other people. They try to be a good boy or good girl having learned that there is inherent value in doing so. Stage three reasoning may judge the morality of an action by evaluating its consequences in terms of a person's relationships.
(4) For Stage four, it is important to obey the laws and social conventions because of its importance to maintaining society. Moral reasoning in stage four is thus beyond the need for approval exhibited in stage three.
(5-6) Post-Conventional
The post-conventional level consists of stages five and six of moral development.
(5) In Stage five, persons have certain principles to which they may attach more value than laws, such as human rights or social justice. In this reasoning, actions are wrong if they violate these ethical principles. Laws are regarded as social contracts rather than dictums, and must be changed when necessary (provided there is agreement). By this reasoning laws that do not promote general social welfare, should be changed. Democratic governments are ostensibly based on Stage five reasoning.
(6) In Stage six, moral reasoning is based on the use of abstract reasoning using universal ethical principles. One way to do this is by imagining oneself in everyone else's shoes, imagining what they would decide if they were doing the same. While Kohlberg insisted that stage six exists, he had difficulty finding participants who use it. It appears that people rarely if ever reach stage six of Kohlberg's model.