This new seventh edition of the book offers extensive discussion of information, uncertainty, and game theory. It contains over a hundred examples illustrating the applicability of economic analysis not only to mainline economic topics but also issues in politics, history, biology, the family, and many other areas. These discussions generally describe recent research published in scholarly books and articles, giving students a good idea of the scientific work done by professional economists. In addition, at appropriate places the text provides ''applications'' representing more extended discussions of selected topics including rationing in wartime (Chapter 5), import quotas (Chapter 7), alleged monopolistic suppression of inventions (Chapter 9), minimum wage laws (Chapter 11), the effects of Social Security upon saving (Chapter 15), fair division of disrupted property (Chapter 16) and whether individuals should pay ransom to a kidnapper (Chapter 17).