About the Authors

Enrico Diecidue (" Dynamic Purchase Decisions Under Regret: Price and Availability ") is an associate professor of decision sciences at INSEAD (France) and holds a Ph.D. from the CentER (Center for Economic Research), Tilburg University, the Netherlands. Since 2001 he has been a resident faculty member at INSEAD, except for 2008-2009 when he was a visiting professor at Wharton and 2010-2011 when he was on sabbatical at the Erasmus School of Economics (the Netherlands). His main research interests are in individual decision making under uncertainty, health decisions, and experimental economics. He is interested in the role of regret, aspiration levels, and time in individual decisions. His current research is also addressing the role of groups in complex and ambiguous decisions. Enrico's research has appeared in leading journals in economics and management. He is an associate editor of Decision Analysis and on the editorial board of the Journal of Risk and Uncertainty . He teaches MBA, executive MBA, and executive participants on topics such as uncertainty, data and judgment; decision making under uncertainty, and management decision making. He has won teaching awards at INSEAD and Wharton. Address : INSEAD, Boulevard de Constance, 77305 Fontainebleau Cedex, France; email: enrico.diecidue@insead.edu . Seth Guikema (" Robust Adversarial Risk Analysis: A Level- k Approach ") is an assistant professor in the Department of Geography and Environmental Engineering at Johns Hopkins University, a professor II (adjunct) in the Department of Industrial Economics, Risk Management, and Planning at the University of Stavanger (Norway), and a senior analyst with Innovative Decisions Inc. He received his Ph.D. in risk and decision analysis from Stanford University and a B.S., M.S., and M.E. in civil and environmental engineering. Address : Department of Geography and Environmental Engineering, 205 Ames Hall, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218; email: sguikema@jhu.edu . L. Robin Keller (" From the Editor: Decisions over Time (Exploding Offers or Purchase Regret), in Game Settings (Embedded Nash Bargaining or Adversarial Games), and in Influence Diagrams ") is a professor of operations and decision technologies in the Merage School of Business at the University of California, Irvine. She received her Ph.D. and M.B.A. in management science and her B.A. in mathematics from the University of California, Los Angeles. She has served as a progra