Biographical note

About the Authors SUNIL GUPTA is Meyer Feldberg Professor of Business at the Columbia Business School, Columbia University, New York. He has also taught at UCLA and the Harvard Business School; conducted seminars and consulted with companies worldwide; appeared on CNN, BBC, and PBS; and been quoted in publications, including The New York Times,The Financial Times, and The Washington Post. Gupta's expertise is in marketing strategy, pricing, and customer management. He has published extensively on these topics. His research papers have won several awards. He serves on the editorial boards of six journals. He is the cofounder and president of the EX Group, a strategic consulting group that specializes in customer management. He also served as an academic trustee of the Marketing Science Institute. He holds an MBA from Indian Institute of Management and a Ph.D. from Columbia University. DONALD R. LEHMANN is George E. Warren Professor of Business at the Columbia Business School, Columbia University, New York. His research interests include modeling individual and group decision-making, empirical generalizations and meta-analysis, the introduction and adoption of new products and innovations, and measuring the value of marketing assets such as brands and customers. He has taught courses in marketing, management, and statistics at Columbia and has also taught at Cornell, Dartmouth, New York University, and the University of Pennsylvania. Lehmann has published in and served on the editorial boards of several journals and was founding editor of Marketing Letters. His books include Market Research and Analysis, Analysis for Marketing Planning, Product Management, and Meta-Analysis in Marketing. He served as executive director of the Marketing Science Institute and as president of the Association for Consumer Research. He is the recipient of many awards, including the 2000 Paul D. Converse award and the AMA McGraw Hill-Irwin distinguished marketing educator award. He holds an M.S.I.A. and Ph.D. from the Krannert School of Purdue University. Gupta and Lehmann, along with Joel Steckel, are coauthors of Marketing Research. © Copyright Pearson Education. All rights reserved.