Professor of Exercise Science, University of South Carolina

Prof of Medicine, Desmond Tutu HIV Centre, University of Cape Town

Professor of sport psychology, Queen's University

Senior Researcher, Pew Internet Project and Affiliate, Berkman Center at Harvard University

New America Fellow, DC; Senior Fellow, Institute for Palestine Studies; Professor Emeritus

University of Massachusetts

Priscilla Pond Flawn Regents Professor of Child Development, University of Texas at Austin

Professor of Psychology

Professor of City and Regional Planning, UC Berkeley

Professor of Sociology, Loughborough University