Dennis Wixon is currently Discipline Lead for Microsoft US BPD. Prior to this role he was the head of research for Microsoft Surface, and has also managed research teams at Microsoft Game Studies, and MSN/Home Products. Before joining Microsoft, Dennis managed the usability team at Digital Equipment Corporation, where a number of important usability methods such as Usability Engineering and Contextual Inquiry were developed. Dennis has been an active member of the user-research community for over 25 years. He co-chaired CHI 2002 served as Vice President for Conferences for ACM SIGCHI. Dennis has co-authored over sixty articles, book chapters and presentations on research methods and theory. He is an adjunct Full Professor in the Human Centered Design and Engineering Department at University of Washington and co-edited with Dr. Judy Ramey the book Field Methods Case Book for Software Design. Dennis holds a Ph.D. in Social Psychology from Clark University.