John Gerring is Professor of Government at the University of Texas, Austin. He is the author of Party Ideologies in America, 1828–1996 (Cambridge, 1998), A Centripetal Theory of Democratic Governance (Cambridge, 2008), Concepts and Method: Giovanni Sartori and his Legacy (with David Collier, 2009), Social Science Methodology: A Unified Framework, 2nd edition (Cambridge, 2012), and Applied Social Science Methodology (with Dino Christenson, Cambridge, forthcoming), along with numerous articles.

• Preface; Part I. Case Studies: 1. Surveys; 2. Definitions; Part II. Selecting Cases: 3. Overview of case selection; 4. Descriptive case studies; 5. Causal case studies; 6. Algorithms and samples; Part III. Analyzing Cases: 7. A typology of research designs; 8. Quantitative and qualitative modes of analysis; Part IV. Validity: 9. Internal validity; 10. External validity; Part V. Conclusions: 11. Tradeoffs; Part VI. References; Index.