1. School of Educational Sciences and Psychology, Philosophical Faculty, University of Eastern Finland, Joensuu, Finland
2. Faculty of Educational Sciences, University of Helsinki, Helsinki, Finland
3. Department of Special Needs Education, Faculty of Educational Sciences, University of Oslo, Oslo, Norway
4. Department of Education, Faculty of Education and Psychology, University of Jyväskylä, Jyväskylä, Finland
5. Wellfare Sciences, Faculty of Social Sciences, University of Tampere, Tampere, Finland