Julia Gray is an Assistant Professor of Political Science at the University of Pennsylvania. Her work in international political economy and international organization has appeared or is forthcoming in the American Journal of Political Science, Comparative Political Studies, International Studies Quarterly, the European Journal of Political Research, Political Science Research Methods and the Review of International Organizations. Prior to her career in academia, she worked for four years as a journalist and editor in Prague and Budapest.

'This very creative book blends two important areas in international relations: the influence of international institutions and the effects of reputation. While the former has become a crucial part of the study of international relations, the latter is still not as central to the field as it should be. This book will be important for the fields of international organization and international political economy.' Jon Pevehouse, University of Wisconsin, Madison

• 1. Introduction: the company you keep; 2. International institutions and sovereign risk; 3. The company you keep in comparative perspective; 4. The effects of good company; 5. When emerging markets join up with bad company; 6. How risk for core members changes on IO expansion; 7. Conclusion.