Professor of Sociology, UCLA

Regents Professor of History and Population, University of Minnesota

Professor of Sociology, University of Wisconsin-Madison

Vilas Distinguised Achievement Professor of Social Work, University of Wisconsin-Madison

Professor of Sociology, University of Maryland

University of Southern California

Bocconi University, Dondena research center

Professor of Sociology, University of North Carolina at Chapel Hill

Senior researcher, Statistics Norway, Dep. of Research

Professor of Demography, University of Florence