2004- Dean, Social Sciences, University of California, Santa Barbara 2004- Professor of Sociology, Depart ment of Sociology, University of California, Santa Barbara 1994-99 Professor, Department of Polic y Studies, School of Public Policy and Social Research, University of California, Los Angeles 1992-99 Professor, Department of Sociology, University of California, Los Angeles 1994-96 Director, Center for the Study of Urban Poverty, University of California, Los Angeles 1989-94 Associate Director, Center for the Study of Urban Poverty, University of California, Los Angeles 1988 Visiting Professor, Department of Sociology and Anthropology, Northeastern University, Boston, Spring 1985-92 Associate Professor, Departme nt of Sociology, University of California, Los Angeles 1978-85 Assistant Professor, Departme nt of Sociology, University of California, Los Angeles 1978-99 Faculty Associate, Center for Afro-American Studies, University of California, Los Angeles 1977-78 Visiting Assistant Professor, Department of Sociology and Anthropology, and Fellow in the Center for Metropolitan Studies, University of Missouri, St. Louis