Stuart Card is a Xerox Research Fellow and the manager of the User Interface Research group at the Xerox Palo Alto Research Center. His study of input devices led to the Fitts's Law characterization of the mouse and was a major factor leading to the mouse's commercial introduction by Xerox. His group has developed theoretical characterizations of human-machine interaction, including the Model Human Processor, the GOMS theory of user interaction, information foraging theory, and statistical descriptions of Internet use. These theories have been put to use in new paradigms of human-machine interaction including the Rooms workspace manager, papertronic systems, and the Information Visualizer. The work of his group has resulted a dozen Xerox products, including contributions to the Xerox Star, Xerox AI Systems, Visual Recall, PaperWorks, TabWorks, and Visual Recall as well as the founding of three software companies, Inxight Software, Outride, and Content Guard. Card is a co-author of the book The Psychology of Human-Computer Interaction, a co-editor of the book, Human Performance Models for Computer-Aided Engineering, and has served on many editorial boards. He received his A.B. in Physics from Oberlin College and his Ph.D. in Psychology from Carnegie Mellon University, where he pursued an interdisciplinary program in psychology, artificial intelligence, and computer science. He has been an adjunct faculty member at Stanford University. His most recent book, Readings in Information Visualization, co-written and edited with Jock Mackinlay and Ben Shneiderman, was published last year. He is currently concentrating with Peter Pirolli on a theory of information use and working on new user interfaces and services for the Internet. Card is an ACM Fellow, a member of the ACM CHI Academy for human-computer interaction, and the first recipient of the CHI Achievement Award.