visual literacy, or the ability to evaluate, apply, or create conceptual visual representations.
Transform abstract thought efficiently into graphic, tangible forms
http://works.bepress.com/connie_mcdonald/18/
This isn’t just "how to make some numbers and vector graphics look clever together." It’s a narrative language--it’s "representation plus interpretation to develop an idea," to quote Franchi.
Francesco Franchi: On Visual Storytelling and New Languages in Journalism from Gestalten on Vimeo.