True/false Value and John Searle
John R. Searle argued in his 1989 article How Performatives Work that performatives are true/false just like constatives. Searle further claimed that performatives are what he calls declarations; this is a technical notion of Searle's account: according to his conception, an utterance is a declaration, if "the successful performance of the speech act is sufficient to bring about the fit between words and world, to make the propositional content true." Searle believes that this double direction of fit contrasts the simple word-to-world fit of assertives.
Read more about this topic: Performative Utterance
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