Professor of Management, Baruch College

University of California - Santa Cruz

University Professor Emeritus of Special Education, George Mason University

University of New South Wales

Professor of Psychological Research Methods - Research Synthesis, University of Vienna

Professor of Public Policy

Associate Professor of Epidemiology, University of Ioannina School of Medicine;

Director, ZPID - Leibniz Institute for Psychology Information & University of Trier

College of Medicine, Qatar University

Associate Professor, University of Southern California, Rossier School of Education