assertives = speech acts that commit a speaker to the truth of the expressed proposition directives = speech acts that are to cause the hearer to take a particular action, e.g. requests, commands and advice commissives = speech acts that commit a speaker to some future action, e.g. promises and oaths expressives = speech acts that express on the speaker's attitudes and emotions towards the proposition, e.g. congratulations, excuses and thanks declarations = speech acts that change the reality in accord with the proposition of the declaration, e.g. baptisms, pronouncing someone guilty or pronouncing someone husband and wife