A historical review of theories of persuasion and its relationship to such areas as argument and propaganda indicates a number of inherent weaknesses in the definitions and taxonomies which have been proposed. Definitions and classifications have been sometimes circular in nature, have reflected the special interests of their authors, have been…

In linguistic analysis of the speech act, the data used to support theoretical conclusions are too often comprised of semantically isolated utterances of the ideal speaker-hearer. In reality, one of the most revealing kinds of data is imperfect data, where the functioning language processes are often unmasked. The study of first language…