John Gerring is Professor of Political Science at Boston University, where he teaches courses on methodology and comparative politics. He has published several books including Social Science Methodology: A Criterial Framework (Cambridge University Press, 2001), Case Study Research: Principles and Practices (Cambridge University Press, 2007) and A Centripetal Theory of Democratic Governance (Cambridge University Press, 2008). He served as a fellow of the School of Social Science at the Institute for Advanced Study (Princeton, New Jersey), as a member of The National Academy of Sciences' Committee on the Evaluation of USAID Programs to Support the Development of Democracy, as President of the… American Political Science Association's Organized Section on Qualitative and Multi-Method Research and is the current recipient of a grant from the National Science Foundation to collect historical data related to colonialism and long-term development.