The purposes of this paper are to compile and describe the published empirical studies that have examined nonverbal visual production variables, to offer a critique of the lines of inquiry, and to suggest some areas for continued research. The studies are presented in two major sections: intravisual and intermedia. The intravisual section discusses studies that have compared variable manipulations within one medium. Its subcategories include: (1) color versus black and white presentations, (2) camera angle, (3) nonverbal expressions, (4) movement, (5) complexity, (6) lighting, (7) image size, and (8) transition devices. The intermedia section discusses studies that have tried to compare one medium with another. Its subcategories include print versus picture media, audiovisual versus print media, audio versus visual media, and video versus print media. (FL)