Abstract
This author pursues argumentation from the perspective of face-to-face interaction. His essay presents data relevant to the representational validity of Sally Jackson and Scott Jacobs' theory of conversational argument. This data, while generally supportive of their ideas, demonstrates flaws in the representational validity of their research. The author then goes on to provide characteristics of the “paradigm case” of interactional argument that add to, but do not replace, Jackson and Jacobs' ideas about argumentation in ordinary conversation.