I first met Chris Baum while working on a project at Charles Schwab years ago. Since then we've made it a point to stay in touch, so I was delighted when he asked me, as editor of Boxes and Arrows, for an interview about the book. We spent double the amount of time we anticipated just chatting about everything related to UX and research. In light of the amount of data he collected, Chris did a wonderful job pulling out the salient points in his article, "What Is Your Mental Model?"

You can also download an excerpt of the book from Boxes and Arrows.

BTW, Chris, great picture of the city skyline reflected in a lake! How very like a mental model in form.