 In addition, it is worth noting that MMR is sometimes justified by appealing in a significant way to a distinctive analysis of moral judgments in combination with a claim about moral disagreement. For example, Prinz (2007) argues that what he calls “moral sentimentalism” implies a form of MMR once we acknowledge moral disagreements. According to moral sentimentalism, an action is morally right (wrong) if and only if some observer of the action has a sentiment of approbation (disapprobation) concerning it. Prinz defends this position on the basis of a metaethical argument that it is the most plausible account in light of empirical studies linking moral judgments and emotions. Since people often have conflicting sentiments about the same action, a judgment of the form ‘Action X is right’ may be true (when expressed by a person who approves of X), and ‘X is wrong’ may also be true (when expressed by a person who disapproves of X). On this view, the truth of such moral judgments is relative to the sentiments of the persons who make them. Moral sentimentalism is a crucial feature of this argument and many philosophers would deny that moral rightness and wrongness depend on our sentiments in this way. But most arguments for MMR are not based on moral sentimentalism.