摘要：Maria Cancian is Professor of Public Affairs and SocialWork, Daniel Meyer is Professor of Social Work, andGeoffrey Wallace is Assistant Professor of Public Affairsat the University of Wisconsin¨CMadison; all are IRP af-filiates. Marieka Klawitter is Associate Professor of Pub-lic Affairs at the University of Washington. AnuRangarajan is Associate Director for Human ServicesResearch and Robert G. Wood is a Senior Economist atMathematica Policy Research, Inc., Princeton, NJ
