Abstract

The error theory of moral judgment says that moral judgments, though often believed to be objectively true, never are. The tendency to believe in the objectivity of our moral beliefs, like the beliefs themselves, is rooted in objective features of human psychology, and not in objective features of the natural world that might exist apart from human psychology. In naturalized epistemology, it is tempting to take this view as the default hypothesis. It appears to make the fewest assumptions in accounting for the fact that humans not only make moral judgments, but believe them to be, at least some of the time, objectively true. In this paper I argue that from an evolutionary perspective, the error theory is not the most parsimonious alternative. It is simpler to suppose that mental representations with moral content arose as direct cognitive and motivational responses to independent moral facts.