Making Sense of the Visual in Technical Communication: A Visual Literacy Approach to Pedagogy
http://baywood.metapress.com/link.asp?target=contribution&id=FGJ6UETB9CA65PC3
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  peer-reviewed

Portewig, Tiffany Craft
Journal of Technical Writing and Communication
2004

Abstract:

We employ an array of terms to denote the visual; however, we have not yet agreed on a clear framework for understanding the function and relationship between visual concepts. I propose a literacy approach to the visual so that as educators, researchers, students, and practitioners, we acquire more than skills that rely on changing definitions and technologies but an intellectual faculty that provides the knowledge, understanding, and abilities that the visual affords. Through an analysis of arguments for visual instruction, I present the wayS in which scholars justify their claims about the visual. These arguments uncover the breadth and depth of the visual and contribute to a taxonomy of visual terminology.