摘要：Katherine Magnuson is Assistant Professor of Social Work, University of Wisconsin¨CMadison, and an IRP affiliate. Marcia K. Meyers is Associate Professor of Social Work and Public Affairs, University of Washing-ton, and an IRP affiliate. Christopher J. Ruhm is Jefferson-Pilot Excellence Professor of Economics, Bryan School of Business and Economics, University of North Carolina, Greensboro. Jane Waldfogel is Professor of Social Work and Public Affairs, Columbia University School of Social Work
