1. Universität Hamburg, Fakultät Erziehungswissenschaft Von-Melle-Park 8 20146 Hamburg Deutschland
2. Rutgers University, Graduate School of Education – Department of Learning and Teaching 10 Seminary Place New Brunswick, NJ 08901 USA
3. Keiko Yasukawa, Faculty of Arts & Social Sciences, bldg 10, level 4, University of Technology Sydney PO Box 123 Broadway 2007 NSW Australia