In this collection of essays, Goertz (political science, U. of Arizona) and Starr (government and international studies, U. of South Carolina) present the first book devoted to the implications of necessary conditions for social science research, illuminating many of the special theoretical and methodological characteristics of necessary condition theories. The text crosses substantive areas, qualitative, quantitative, and case study traditions, and individual and institutional theories of choice; stresses the novel theoretical and methodological problems that the analysis of necessary conditions poses; and makes clear relationships among theory, logic, and method not obvious to many students and scholars. For graduate students and scholars in political science, economics, and sociology. Annotation c. Book News, Inc., Portland, OR (booknews.com)