Why is nationalism so widespread? How does the phenomenon arise? How can its negative consequences be controlled? This collection of essays by economists, sociologists, and political scientists from North America and Europe tries to answer these questions at the forefront of political discussion. The work differs from others in that the authors' responses are not based on avowed ideological perspectives, but are rather drawn from rational-choice analysis, the foundation of social science. Although each of the contributors to Nationalism and Rationality takes a distinctive point of view, the collection as a whole focuses on three subjects - the origins of nationalism, whether and why it promotes good or evil, and how to deal with its occasional destructive consequences. Readers will find provocative insights into nationalism through the contributors' diverse diagnoses and prescriptions.