Lecture, three hours. Introduction to behavioral research on judgment and decision making, with special attention to conditions of uncertainty. Includes research by Daniel Kahneman and Amos Tversky for which Kahneman was awarded 2002 Nobel Memorial Prize in Economic Sciences, and some of work for which Richard Thaler was cited in his Nobel Memorial Prize in 2017. Examination of recent descriptive models of judgment and decision making using rational choice theory as point of departure. Examination of classic articles and current controversies. Letter grading.