CONTENTS -- Preface & Acknowledgments -- 1. Toward a Better Understanding of Theories of International Condict -- 2. Comparative Hypothesis Testing and Some Limits to Knowledge -- 3. Choosing and Testing the Arguments: The Practice and Pitfalls of Comparative Hypothesis Testing -- 4. Arguments and Operational Measures -- 5. Findings -- 6. Assessing a Model's Reliability across Space and Time -- 7. Conclusion -- Appendix A - Data Development and Cumulation for International Relations: EUGene -- Appendix B - Measuring Expected Utility -- Notes -- Bibliography -- Index.