Dr. Fabian Kessl is Professor of Social Pedagogy at the Faculty of Human- and Social Sciences, University of Wuppertal Dr. Drs. h.c. Walter Lorenz was Professor of Applied Social Sciences at the Faculty of Education, Free University of Bozen / Bolzano, and is currently a Contract Professor of Social Work at the Charles University of Prague Dr. Dr. h.c. Hans-Uwe Otto is Senior Research Professor at the Faculty of Educational Science, University of Bielefeld, and Adjunct Professor at the School of Social Policy and Practice at the University of Pennsylvania Dr. Sue White is Professor of Social Work in the Department of Sociological Studies, University of Sheffield