Which theorist was an American psychologist who pioneered work in moral development? Heavily influenced by the Holocaust, he studied psychology and taught at Harvard. He was famous for researching how people solve moral dilemmas.

Lawrence Kohlberg

Explanation:

The theory of moral development is Kohlberg's best known. His theory, like Piaget's, is universalist. It does not affirm the universality of norms, but rather the structures that allow the application of norms in precise contexts and provide criteria for moral judgment. Believes that through an interactive process, all human beings have the capacity to achieve full moral competence, as measured by the paradigm of autonomous morality, or, as Kohlberg prefers, that of post-conventional morality.