(2014-05-09) Torsti, Pilvi; Laaksonen, Seppo; van den Berg, Marko; Wass, Hanna; Löfström, Jan; Ouakrim-Soivio, Najat; Löfström, Jan; University of Helsinki. Department of Social Science History - Torsti, Pilvi; University of Helsinki. Department of Social Research - Laaksonen, Seppo; University of Helsinki. Normal Lyceum of Helsinki - van den Berg, Marko; University of Helsinki. Department of Economics and Political Studies - Wass, Hanna; Opettajankoulutuslaitos - Löfström, Jan; University of Helsinki. Normal Lyceum of Helsinki - Ouakrim-Soivio, Najat; University of Helsinki. Department of Teacher Education - Löfström, Jan