and reasoning are two overlapping topics of study in moral psychology that have historically received a great amount of attention, even preceding the influential work of Piaget and Kohlberg. Moral reasoning refers specifically to the study of how people think about right and wrong and how they acquire and apply moral rules. Moral development refers more broadly to age-related changes in thoughts and emotions that guide moral beliefs, judgments and behaviors. Kohlberg's stage theory Jean Piaget, in watching children play games, noted how their rationales for cooperation changed with experience and maturation. He identified two stages, heteronomous (morality centered outside the self) and autonomous (internalized morality). Lawerence Kohlberg sought to expand Piaget's work. His cognitive developmental theory of moral reasoning dominated the field for decades. He focused on moral development as one's progression in the capacity to reason about justice. Kohlberg's interview method included hypothetical moral dilemmas or conflicts of interest (most notably, the Heinz dilemma). He proposed six stages and three levels of development (claiming that "anyone who interviewed children about dilemmas and who followed them longitudinally in time would come to our six stages and no others). At the Preconventional level, the first two stages included the punishment-and-obedience orientation and the instrumental-relativist orientation. The next level, the conventional level, included the interpersonal concordance or "good boy – nice girl" orientation, along with the "law and order" orientation. Lastly, the final Postconventional level consisted of the social-contract, legalistic orientation and the universal-ethical-principle orientation. According to Kohlberg, an individual is considered more cognitively mature depending on their stage of moral reasoning, which grows as they advance in education and world experience. Critics of Kohlberg's approach (such as Carol Gilligan and Jane Attanucci) argue that there is an over-emphasis on justice and an under-emphasis on an additional perspective to moral reasoning, known as the care perspective. The justice perspective draws attention to inequality and oppression, while striving for reciprocal rights and equal respect for all. The care perspective draws attention to the ideas of detachment and abandonment, while striving for attention and response to people who need it. Care Orientation is relationally based. It has a more situational focus that is dependent on the needs of others as opposed to Justice Orientation's objectivity. However, reviews by others have found that Gilligan's theory was not supported by empirical studies since orientations are individual dependent. In fact, in neo-Kohlbergian studies with the Defining