Moral development is the process by which people ... a relatively small percentage of people ever reach the post-conventional stages (around 10 to 15%). One older analysis found that while stages ...

Psychologist Lawrence Kohlberg established his stages of moral development in 1958 ... His stages include pre-conventional, conventional, post-conventional, and what we learn in one stage is ...

Moral development has been the topic of philosophical ... Instead, they would stop developing morally in the middle stages at the conventional level—and that's exactly what research showed.