Abstract

Recent work in various branches of philosophy has reinvigorated debate over the psychology behind moral judgment. Using Marc Hauser's categorization of theories as “Kantian,” “Humean,” or “Rawlsian” to frame the discussion, I argue that the existing evidence weighs against the Kantian model and partly in favor of both the Humean and the Rawlsian models. Emotions do play a causal role in the formation of our moral judgments, as the Humean model claims, but there are also unconscious principles shaping our moral judgments, as the Rawlsian model predicts. Thus, Hauser's tripartite division of possible models of moral psychology is inadequate. Drawing on research in cognitive neuroscience, clinical and behavioral psychology, and psychopathology, I sketch a new, developmental sentimentalist model of moral psychology. I call it a “Mencian” model, after the Confucian philosopher Mencius. On this model, moral judgments are caused by emotions, but because of the way emotions are mapped onto particular actions, moral judgments unconsciously reflect certain principled distinctions.