Introduction; 1. A framework for evaluating the performance of international courts and tribunals Theresa Squatrito, Oran R. Young, Andreas Føllesdal and Geir Ulfstein; Part I: 2. Court performance within the multilateral trade regime Cosette D. Creamer and Anton Strezhnev; 3. The performance of investment treaty arbitration Daniel Behn; 4. Performance of regional human rights courts Dinah Shelton; 5. Performance of international criminal courts and tribunals Nobuo Hayashi; Part II: 6. Assessing the international criminal court Hyeran Jo, Mitchell Radtke and Beth A. Simmons; 7. How the fragmentation of the international judiciary affects the performance of international judicial bodies Benjamin Faude; 8. International judicial performances and the performance of international courts Jeffrey L. Dunoff and Mark A. Pollack; 9. International courts' socialization strategies for actual and perceived performance Nicole De Silva; 10. What happens after a judgment is given? Judgment compliance and the performance of international courts and tribunals Chiara Giorgetti; 11. Problem-solving structure and international courts and tribunals: lessons from the study of international regimes Steinar Andresen; Part III: 12. Measurement and methods: opportunities for future research Theresa Squatrito; 13. What we know so far Oran R. Young, Theresa Squatrito, Andreas Føllesdal and Geir Ulfstein.