Professor, London School of Hygiene & Tropical Medicine

Erwin H. Schell Professor, MIT Sloan

Taylor-Bascom Chair, and Vilas Distinguished Achievement Professor, University of …

Luddy Distinguished Professor of Informatics and Computer Science, Indiana University

University Distinguished Professor, Northeastern University; & Visiting Scholar, Harvard …

Associate Professor, Cornell University

Professor of Social Psychology, Department of Psychology, University of Cambridge

James O. Freedman Presidential Professor, Department of Government, Dartmouth College

Professor, University of California, Berkeley

Senate Distinguished Professor Emeritus, School of Communication, San Diego State …