Sprechakte
Sprechakte, or speech acts, is a concept in linguistics and philosophy of language that analyzes how utterances do things in addition to conveying information. Introduced by J. L. Austin in How to Do Things with Words (1955), the theory distinguishes the act of saying something (the locutionary act) from the intended force of the utterance (the illocutionary act) and the actual effect on listeners (the perlocutionary act).
Austinian theory was later refined by John Searle, who categorized illocutionary acts into five main classes:
Felicity conditions govern when an illocutionary act succeeds: the utterance must be appropriate to the context,
Sprechakte has influenced pragmatics, discourse analysis, and applied fields such as conversation analysis and natural language