What I mean by the term “design” is what someone who went to art college and studied industrial design would recognize as design. At least this vague characterization helps narrow our interpretation of the term somewhat. Some recent work in cognitive science (Goel 1995, Gedenryd 1998) helps distinguish it further. It suggests that a designer’s approach to creative problem solving is very different from how computer scientists, for example, solve puzzles. That is, design can be distinguished by a particular cognitive style. Gendenryd, in particular, makes clear that sketching is fundamental to the design process. Furthermore, related work by Suwa and Tversky (2002) and Tcerksy (2002) shows that besides the ability to make sketches, a designer’s use of them is a distinct skill that develops with practice, and is fundamental to their cognitive style.
Design as a particular cognitive style, and the ability to sketch as well as how to use the sketches are fundamental to each designer’s cognitive style.
“Sketching the User Experience”
(Buxton, 2007, p. 96)
(Source: blog.semanticfoundry.com)