David Irwin received his Ph.D. from the University of Michigan in 1983. He is a professor in the UIUC Department of Psychology and a part-time faculty member in the Beckman Institute Human Perception and Performance Group. His fields of professional interest are visual perception, visual cognition, and psycholinguistics. Honors and awards: John Simon Guggenheim Memorial Foundation Fellowship; James McKeen Cattell Sabbatical Award.