Leonard Broom Professor of Demography , University of California, Santa Barbara Associate Director, Broom Center for Demogra phy, UCSB Professor II, Department of Economics, University of Bergen, NorwaVisiting Associate Professor, Department of Economic s, Princeton University, 1989 - 1990 National Fellow, Hoover Institution, Stanford University, 1982 - 1983 University of Washington Director, Center for Studies in Demography and Ecology, 2007 - 2010 Director, Center for Research on Families, 2001 - 2011 Castor P rofessor of Economics, 2004 - 2011 Professor of Economics, 1994 - 2004 Associate Prof essor, Department of Economics , 1989 - 1994 Assistant Prof essor, Department of Economics, 1984 - 1989 Assistant Pro fessor, Department of Economics, University of Pennsylvania, 19 80 - 1984