Journal of Management Information Systems / Summer 2005, Vol. 22, No. 1, pp. 117–151. © 2005 M.E. Sharpe, Inc. 0742–1222 / 2005 $9.50 + 0.00. A Multidimensional Commitment Model of Volitional Systems Adoption and Usage Behavior YOGESH MALHOTRA AND DENNIS GALLETTA YOGESH MALHOTRA earned his Ph.D. in Business Administration from the University of Pittsburgh’s Katz Graduate School of Business in 1998. Before joining the faculty of Syracuse University Whitman School of Management teaching MIS and Supply Chain Management, he taught as invited faculty for the Northwestern University’s Kellogg School of Management and the Carnegie Mellon University’s Graduate School of Industrial Administration. His research interests include adoption and utilization of information and communication technologies, knowledge management, and technol- ogy and innovation management. Citation analyses studies by IBM and University of Minnesota list him among the world’s most-cited authors on knowledge management and the world’s seminal contributors in knowledge management. His research is pub- lished in two research monographs and more than 50 journal articles, book and ency- clopedia chapters, conference proceedings, and reprints. He has served or serves on the editorial, advisory, and review boards of several leading research journals and re- ceived R&D grants from the United Nations, Intel Corporation, and SAP University Alliance, among others. His consulting engagements on corporate strategy, national policy, and world development include some of the world’s largest governments and corporations and the United Nations. His research, analyses, interviews, and technol- ogy ventures have been featured in Business Week, Fortune, Wall Street Journal, Forbes, Fast Company, Business 2.0, Chief Executive, CIO Magazine, CIO Insight, Computerworld, InformationWeek, and other worldwide media and publications. DENNIS GALLETTA is an AIS Fellow and Professor of MIS at the Fox School of Busi- ness, Temple University, and Professor of Business Administration at the Katz School, University of Pittsburgh. He obtained his Ph.D. in MIS from the University of Minne- sota. His current research interests cover end-user behavior, attitudes, and performance. His articles have appeared in journals such as Management Science, Information Sys- tems Research, Journal of Management Information Systems, Communications of the ACM, Decision Sciences, Data Base, Information and Management, and Journal of AIS. He has served on several editorial boards, including MIS Quarterly, Data Base, and Information Systems and e-Business Management. His research studies have also been featured in outlets such as Business Week, Wall Street Journal, Computerworld, and CNN. He is currently editing a two-volume collection of research on Human– Computer Interaction in the MIS field for Vladimir Zwass’s series Advances in MIS. He taught undergraduate information systems courses during the fall 1999 Semester at Sea Voyage, served as the ICIS Treasurer from 1994 to 1998, was a member of the AIS Council representing the Americas in 1996 and 1997, chaired the first Americas Conference for AIS (AMCIS), was program cochair for both ICIS (2005) and AMCIS (2003), and is Editor-in-Chief of ISWorld.