Many philosophers accept an ‘Authority Thesis’ according to which self-ascriptions of one’s current mental states ordinarily are or ought to be met with a distinctive presumption of truth. Recently, however, Wolfgang Barz (2018) has argued that there is no adequately specified Authority Thesis. This, he argues, is because available specifications are either (1) philosophically puzzling but implausible, or (2) plausible but philosophically unpuzzling. I argue that there are several plausible and philosophically puzzling specifications of the Authority Thesis.

Neo-expressivism is the view that avowals—first-personal, present tense self-ascriptions of mental states—ordinarily express the very mental states that they semantically represent, such that they carry a strong presumption of truth and are immune to requests for epistemic support. Peter Langland-Hassan (2015. “Self-Knowledge and Imagination.” Philosophical Explorations 18 (2): 226–245) has argued that Neo-expressivism cannot accommodate avowals of one’s imaginings. In this short paper I argue that Neo-expressivism can, in fact, accommodate them.

Barz (2018) contends that there is no specification of the phenomenon of first-person authority that avoids falsity or triviality. This paper offers one. When a subject self-ascribes a current conscious mental state in speech, there is a presumption that what she says is true. To defeat this presumption, one must be able to explain how she has been led astray.

Self-ascriptions of one's current mental states often seem authoritative. It is sometimes thought that the authority of such self-ascriptions is, in part, a matter of their indubitability. However, they do not seem to be universally indubitable. How, then, should claims about self-ascriptive indubitability be qualified? Here I consider several such qualifications from the literature. Finding many of them wanting, I nevertheless settle on multiple specifications of the thesis that self-ascriptions are authoritatively indubitable. Some of these specifications concern how other agents (...) ought to treat one's self-ascriptions, while a final specification concerns how one is entitled to respond to others’ doubts about one's self-ascriptions. The result is a pluralistic view of self-ascriptive indubitability: different types of mental state self-ascriptions are indubitable in different ways, and for different people. (shrink)