In psychology, study of the development of the moral sense
i.
e., of the capacity for forming judgments about what is morally right or wrong, good or bad. The U.S. psychologist Lawrence Kohlberg hypothesized that people's development of moral standards passes through several levels. At the early level, that of preconventional moral reasoning, the child uses external and physical events (such as pleasure or pain) as the source for moral decisions; his standards are based strictly on what will avoid punishment or bring pleasure. At the intermediate level, that of conventional moral reasoning, the child or adolescent views moral standards as a way of maintaining the approval of authority figures, chiefly his parents, and acts in accordance with their precepts. At the third level, that of postconventional moral reasoning, the adult bases his moral standards on principles that he himself has evaluated and accepts as inherently valid, regardless of society's opinion. Beginning in the 1970s Kohlberg's work was criticized by psychologists and philosophers influenced by feminism. According to Carol Gilligan, Kohlberg's stages are inherently sexist, because they equate moral maturity with an orientation toward moral problems that is socially instilled in males but not in females. Whereas the male "ethic of rights and justice" treats morality in terms of abstract principles and conceives of moral agents as essentially autonomous, acting independently of their social situations according to general rules, the female "ethic of care" treats morality in terms of concrete bonds to particular individuals based on feelings of care and responsibility and conceives of moral agents as connected and interdependent through their feelings of care and responsibility for each other.