Vindicating Avowal Expressivism: A Note on Rosenthal’s Performance-Conditional Equivalence Thesis

The paper comments on David Rosenthal’s claim that saying “p” is performance-conditionally equivalent to saying “I believe that p”. It is argued, by way of counterexamples, that the proposed performance-conditional equivalence does not hold in this generality. The paper further proposes that avowal expressivism gives necessary conditions for the performance-conditional equivalence: it holds only if the speaker’s utterance of “p” is a non-explicit expressive act expressive of the belief that p and the utterance of “I believe that p” is an explicit expressive act expressive of the very same belief. If that is correct, the performance-conditional equivalence thesis provides an argument against Rosenthal’s preferred avowal descriptivism and in favor of avowal expressivism.