Moral psychology studies morality from philosophical and psychological perspectives. Studies have found that emotions play a key role in moral judgment through evolutionary processes. Jonathan Haidt conducted studies showing that emotions like disgust often override reasoning in moral judgments. He proposed four principles of moral psychology: 1) intuitions guide most judgments but can sometimes be overridden, 2) moral thinking rationalizes intuitions to defend views, 3) morality binds groups through shared constraints, 4) morality considers factors beyond harm and fairness like loyalty, authority, and purity.

1. Moral Psychology