Mario L. Small is Quetelet professor of social science at Columbia University. An elected member of the National Academy of Sciences, the American Academy of Arts and Sciences, and the American Academy of Political and Social Sciences, Small is an expert on social inequality, neighborhoods, social networks, and the relationship between qualitative and quantitative methods. His books include Villa Victoria: The Transformation of Social Capital in a Boston Barrio, Unanticipated Gains: Origins of Network Inequality in Everyday Life, Someone To Talk To: How Networks Matter in Practice, and (with Jessica Calarco) Qualitative Literacy: A Guide for Evaluating Ethnographic and Interview Research. He has testified on social capital and inequality before the U.S. Senate. Small received his B.A. in sociology/anthropology from Carleton College, and his M.A. and Ph.D. in sociology from Harvard University.