My Brain's Not Like Yours: Individual Differences in Visual Processing Styles 
The principles of graphic design 'work' for viewers for several reasons. One reason is that well-designed graphics perform significant information-processing functions for viewers. This workshop looks at individual differences in several dimensions of information-processing style (including visual/haptic,field independent/dependent, high/low detail analysis, high/low visual distractibility, and leveling/sharpening in visual memory). It then examines the ability of graphic designs to 'supplant' processing skills for viewers by either captializing on viewer strengths or compensating for their weaknesses.
Ausburn, Floyd B. and Lynna J. Ausburn. STC Proceedings (1995). Articles>Graphic Design>Visual>Cognitive Psychology