ED: Joseph R. Smiley Distinguished Professor of Psychology at the University of Illinois, and currently the president of IPPA, the International Positive Psychology Association (2008 & 2009).DK: Nobel Prize winner (2002, Economic Science), and Senior Scholar at the Woodrow Wilson School of Public and International Affairs. He is also Professor of Psychology and Public Affairs Emeritus at the Woodrow Wilson School, the Eugene Higgins Professor of Psychology Emeritus at Princeton University, and a fellow of the Center for Rationality at the Hebrew University in Jerusalem.JH: Arthur J.E. Child Foundation Fellow of the Canadian Institute for Advanced Research, and Professor Emeritus of Economics, University of British Columbia