1. Department of Education and Special Education, University of Gothenburg, Gothenburg, Sweden
2. Department of Applied Educational Science, Umeå University, Umeå, Sweden
3. School of Education, University of Iceland, Reykjavík, Iceland
4. Center for Research on Lifelong Learning and Education (CELE), Department of Education, University of Turku, Turku, Finland
5. Faculty of Educational Sciences, University of Helsinki, Helsinki, Finland