 Argumentation theory is a broad interdisciplinary field that studies real life argument. Developments in argumentation theory have been greatly influenced by formal and informal logic; pragma-dialectics (developed by van Eemeren and Grootendorst and their Dutch or “Amsterdam” school of argumentation); the Critical Thinking Movement; American speech communication; rhetoric; pragmatics; and the Polish School of Argument (which has published a relevant  manifesto).  In its attempt to understand argument, argumentation theory does not hesitate to make use of these and other related disciplines: cognitive psychology, computational modeling, semiotics, discourse analysis, the history of art, AI, and so on. 