This anthology is intended for advanced undergraduates and graduate students in such disciplines ms philosophy, psychology, economics, and political science. It includes twenty-one selections falling under three main categories: individual decision theory; game theory and group decision making; reasons, desires, and irrationality. All the pieces have been published before in journals and have been proven to be of long-term importance to theoretical work in rational action. Among the authors represented are Leonard Savage, Maurice Allais, Daniel Kahneman, Amos Tversky, Herbert Simon, Robert Nozick, John Harsanyi, Kenneth Arrow, Amartya Sen, Bernard Williams, and Donald Davidson.<P>The volume includes a general introduction on decision theory and a topical bibliography.