Delia Baldassarri is Professor in the Department of Sociology at New York University. She holds courtesy appointments in the Wilf Family Department of Politics and in the Management and Organizations Department at the Stern School of Business. Professor Baldassarri earned a B.A. and a Ph.D. in Sociology and Social Research from the University of Trento, Italy (2003; 2006), and a Ph.D. in Sociology from Columbia University (2007). Previously, she was an Assistant Professor and later Associate Professor at Princeton University. Professor Baldassarri’s research interests are in the fields of Economic Sociology, Political Sociology, Social Networks, and Analytical Sociology. Her current research projects include a study of the emergence of cooperation in complex societies, focusing on the empirical case of ethnically heterogeneous communities and a book project, Centrifugal Politics, Crosscutting People, that investigates the demographic and social network bases of partisanship in American public opinion. Professor Baldassarri has received a few career awards, including the Freeman Award, given by the International Network of Social Network Analysis to distinguished scholars in the field of social networks, the Raymond Boudon Award for early career achievement from the European Academy of Sociology, and the Hans L. Zetterberg Prize in Sociology. She has received awards from the American Sociological Association for her work in the subfields of Economic Sociology, Mathematical Sociology, Collective Behavior and Social Movements, Rationality and Society, and Cultural Sociology, the R.V. Gould award from the American Journal of Sociology, and the Best Book in Political Science award from the Italian Political Science Association for The Simple Art of Voting. She is a Fellow of the European Academy of Sociology, has been a Fellow at the Russell Sage Foundation, Nuffield College at Oxford, and is a Senior Researcher at Bocconi University. Her work has appeared in many leading journals, among which Science, Proceedings of the National Academy of Science, American Journal of Sociology, American Sociological Review, and American Journal of Political Science.