Hein de Haas PhD is Professor of Sociology at the University of Amsterdam The Netherlands. He is a founding member and former director of the International Migration Institute (IMI) at the University of Oxford United Kingdom and now directs the IMI at its current home at the University of Amsterdam. Dr. de Haas is also Professor in migration and development at Maastricht University /United Nations UniversityMERIT. His research focuses on the linkages between migration and broader processes of social transformation and development in origin and destination countries. Stephen Castles DPhil was Honorary Professor of Sociology at the University of Sydney Australia before retiring in 2017 and served as the first director of the International Migration Institute at the University of Oxford United Kingdom. His research has focused on international migration dynamics global governance migration and development and migration trends in Africa Asia and Europe. Dr. Castles's books and articles have been translated into many languages and have been highly influential in the development of international migration studies. Mark J. Miller PhD is Emma Smith Morris Professor Emeritus of Political Science and International Relations at the University of Delaware. He served as editor of the International Migration Review from 1983 to 2005. Dr. Miller has conducted research and consulted widely on comparative immigration and refugee policies global migration and migration and security. He is a recipient of the Francis Alison award the highest honor extended to faculty by the University of Delaware. . Language: English