Carol Gilligan, an American psychologist, proposed a theory of moral development that focused on the differences between males and females in their moral reasoning. Gilligan's theory challenged the idea that the male perspective represented the universal standard for moral development, as proposed by earlier theorists like Kohlberg and Piaget. Gilligan's theory of moral development suggests that women tend to use a different type of moral reasoning than men.

Gilligan proposed three stages of moral development in her theory:

1. The pre-conventional stage: This stage is similar to the pre-conventional stage in Kohlberg's theory. In this stage, individuals are focused on their own needs and desires and may make moral judgments based on whether an action will bring pleasure or pain.
2. The conventional stage: In this stage, individuals begin to focus on the needs of others and on social expectations. Individuals at this stage make moral judgments based on whether an action will be seen as right or wrong by others.
3. The post-conventional stage: In this stage, individuals focus on principles such as justice, compassion, and equality. Individuals at this stage may challenge social norms and expectations and may make moral judgments based on their own sense of what is right.

Gilligan's theory of moral development differs from Kohlberg's theory in that it focuses on the different ways that males and females tend to approach moral reasoning. According to Gilligan, females tend to use an "ethic of care," which emphasizes relationships, empathy, and responsibility to others. Males, on the other hand, tend to use an "ethic of justice," which emphasizes principles such as fairness and individual rights.

Gilligan's theory of moral development has been influential in highlighting the importance of gender differences in moral reasoning and in advocating for a more inclusive approach to moral education. However, it has also been criticized for oversimplifying the complex ways in which individuals develop their own moral reasoning and for reinforcing gender stereotypes.