Presents and tests the verbal-plan approach as a basis for predicting verbal behavior. (Defines verbal plan as "what an individual intends to say in a specific situation or a general situation.") (PD)

Reviews personality research conflict between trait and situationist positions because of its relevance to communication trait research. Reports results of a study based on a recent theory of argumentativeness that is inherently interactionist. Suggests the possible value of interactionist approaches to communication study, as the hypotheses…

Extends previous modality and source cue studies by manipulating argument quality. Randomly assigned college students by class to an argument quality by source attribute by modality factorial experiment. Finds the print mode produces only argument main effects, and audio and video modes produce argument by cue interactions. Finds data inconsistent…