IRWIN GARFINKEL is M. I. Ginsberg Professor of Continuing Urban Problems in the School of Social Work at Columbia University. SARA S. MCLANAHAN is professor of sociology and public affairs at Princeton University. DANIEL R. MEYER is associate professor in the School of Social Work at the University of Wisconsin, Madison, and an affiliate of the Institute for Research on Poverty. JUDITH A. SELTZER is professor of sociology at the University of California, Los Angeles. CONTRIBUTORS: Irwin Garfinkel, Sara S. McLanahan, Daniel R. Meyer, Judith A. Seltzer, David E. Bloom, Anne Case, Cecilia Conrad, Fred Doolittle, Richard B. Freeman, Thomas L. Hanson, Martha Minow, Jessica