Expressivism, self-knowledge, and rational agency

One family of thought about self-knowledge has argued that authoritative self-ascriptions express a form of higher-order knowledge whose special character is explained by the role that knowledge plays in rational agency. In contrast to this “regulative model”, according to Wittgenstein’s treatment of self-knowledge authoritative self-ascription of one’s present-tense mental states is explained by the fact that sincere self-ascriptions express the very states they self-ascribe. The Wittgensteinian account is epistemologically deflationary, and it makes no use of higher-order thought to account for the distinctive features of self-ascriptions. It is argued that the regulative model faces difficulties that both undermine it and reinforce the Wittgensteinian explanation. Making use of ideas from Donald Davidson and Richard Moran, an alternative first-order sketch of rational agency consistent with the expressivist view is offered.