John Searle

• The work on speech acts was extend by John Searle on his "Speech Acts" (1969) book.
• He attempted to classify speech acts into five classes.

1. Representatives- commit the speaker to the truth of an expressed proposition. (informing)
2. Directives- attempts on the part of the speaker to get the hearer to do something (request).
3. Commissives- commit the speaker to a course of action (promise).
4. Expressives- express some psychological state (thanking).
5. Declarations- effect some changes in an institutional state of affairs. (declare marriage).