Information graphics or diagrams are two-dimensional maps of relationships that present information. Creators and interpreters of diagrams need to know what makes some diagrams more effective in communicating information. This paper suggests a theoretical framework for diagram classification to make this possible. This framework consists of two…

Provides evidence of the devaluation of visuals in technical communication courses and also that pedagogical materials on visuals are at odds with current rhetorical theory and are increasingly anachronistic in the computer era. Discusses implications of the computers' impact for visual instruction and presents suggestions for future directions in…