Professor for Psychological Assessment, Humboldt-Universität zu Berlin

Linköping University, Professor of adult education research

Professor of Lifelong Learning and Educational Management

Dep. of Neurology and Clinical Neuropsychology, Ernst von Bergmann Klinikum Potsdam …

Arizona State University

Professor, UCL Institute of Education, University College London

Professor of Community Development, Arizona State University

Hong Kong

Associate Professor of Education, Australian Catholic University

Professor of Soziologie, University of Mannheim and Scientific Director at GESIS Leibniz …