Analyzes an Afro-American sermon and a disputed speech by a Black political leader to mixed audience. Dialect alternants signal switching between contrasting styles in both. Conversational inference is shown to depend not only on grammar, lexical meanings, and conversational principles, but also on constellations of speech variants, rhythm, and…

This paper focuses on a language variation model that incorporates a number of concepts from linguistic and rhetorical studies. The model views language variation as a product of two correlating causes: one, the user and his or her personal, regional, and social dialect; and the other, the user's use of the language in terms of such discourse…