Guillermo Rosas is Associate Professor of Political Science and research fellow at the Weidenbaum Center on the Economy, Government, and Public Policy at Washington University in St. Louis. He earned his BA in International Relations at El Colegio de México (1995) and a PhD in Political Science at Duke University (2002). Before joining Washington University in 2003, he was a faculty member at the Instituto Tecnológico Autónomo de México. More recently, he has held visiting professor appointments at the Institut Barcelona d’Estudis Internacionals, the Hertie School of Governance in Berlín, and the Universidad Católica del Uruguay. He has advanced two substantive research agendas: One focuses on the policy consequences of political regimes in the realm of banking policy, the other one concerns democratic institutions and their effects on political elite behavior, especially in Latin America. Spanning both of these agendas, he uses Bayesian methods of inference to deal with data problems typically encountered in comparative politics. His research has been supported by the Fulbright Commission and the Alexander von Humboldt Foundation and has appeared in the American Journal of Political Science, the Journal of Politics, and Comparative Political Studies, among others. Rosas is the author of Curbing Bailouts: Bank Crises and Democratic Accountability in Comparative Perspective (University of Michigan Press, 2009) and co-author of Latin American Party Systems (Cambridge University Press, 2010).