Moral Theory refers to the set of standards that enable people to live cooperatively in groups

People have moral values; that is, they accept standards according to which their conduct is judged as either right or wrong, good or evil. The particular norms by which moral actions are judged vary to some extent from individual to individual and from culture to culture (although some norms, such as not to kill, not to steal, and to honor one's parents, are widespread and perhaps universal), but value judgments concerning human behavior are passed in all cultures. This universality raises two related questions: whether the moral sense is part of human nature, one more dimension of our biological make-up; and whether ethical values may be products of biological evolution rather than being given by religious and other cultural traditions.

MoralTheoryrefers