Diego Zapata-Rivera is Distinguished Presidential Appointee in the Learning and Assessment Foundations and Innovations (LAFI) Center at Educational Testing Service in Princeton, NJ. He earned a Ph.D. in computer science (with a focus on artificial intelligence in education) from the University of Saskatchewan in 2003.His research at ETS has focused on the areas of innovations in score reporting and technology-enhanced assessment including work on adaptive learning environments and game-based assessments. His research interests also include Bayesian student modeling, open student models, conversation-based tasks, virtual communities, authoring tools and program evaluation.Dr. Zapata-Rivera has produced over 100 publications including journal articles, book chapters, and technical papers. He has served as a reviewer for several international conferences and journals. He has been a committee member and organizer of international conferences and workshops in his research areas.He is a member of the Editorial Board of User Modeling and User-Adapted Interaction and an Associate Editor for AI for Human Learning and Behavior Change and a former Associate Editor of the IEEE Transactions on Learning Technologies Journal. Most recently, Dr. Zapata-Rivera has been invited to contribute his expertise to projects sponsored by the National Research Council, the National Science Foundation, NASA and the US Army Research Laboratory.