John M. Carroll is Edward Frymoyer Chair Professor of Information Sciences and Technology at the Pennsylvania State University. His research interests include methods and theory in human-computer interaction, particularly as applied to networking tools for collaborative learning and problem solving, and the design of interactive information systems. His books include Making Use (MIT Press, 2000), HCI in the New Millennium (Addison-Wesley, 2001), Usability Engineering (Morgan-Kaufmann, 2002, with M.B. Rosson) and HCI Models, Theories, and Frameworks (Morgan-Kaufmann, 2003), Rationale-based software engineering (Springer, 2008, with J. Burge, R. McCall and I. Mistrik), and Learning in Communities (Springer, 2009). He serves on several editorial boards for journals, handbooks, and series and is Editor-in-Chief of the ACM Transactions on Computer-Human Interactions. He received the Rigo Award and the CHI Lifetime Achievement Award from ACM, the Silver Core Award from IFIP, the Alfred N. Goldsmith Award from IEEE. He is a fellow of the ACM, IEEE, and the Human Factors and Ergonomics Society.