Lee Ross is Professor of Psychology at Stanford University. He received his Ph.D. in psychology from Columbia University in 1969. He is co-author with Richard Nisbett of Human Inference and co-editor with John Flavell of Cognitive Social Development: Frontiers and Possible Futures. He is a founder and one of the principal investigators of the Stanford Centre on Conflict and Negotiation. His 1977 article "The Intuitive Psychologist and His Shortcomings" is the most widely cited article of the 1980s in social psychology. Richard E. Nisbett is Theodore M Newcomb Professor of Psychology and Director of the Research Centre for Group Dynamics at the University of Michigan. He received his Ph.D. degree in Psychology from Columbia University in 1966. He taught at Yale University from 1966 to 1971. He is co-author, with Lee Ross, of Human Inference, with E. E. Jones, D. E. Kanouse, H. H. Kelley, S.Valins and B. Weiner of Attribution: Perceiving the Causes of Behavior, and with J. Holland, K. Holyoak, and P. Thagard of Induction. In 1982 he was the recipient of the Donald Campbell Award for distinguished Research in Social Psychology.