1. Faculty of Social Sciences, Hosei University, Tokyo, Japan
2. Faculty of Humanities, University of Shiga Prefecture, Hikone, Japan
3. Faculty of Regional Studies, Gifu University, Gifu, Japan
4. Educational Support Centre of the NIRE, Tokyo, Japan
5. Faculty of Human and Environmental Studies, Kyushu University, Fukuoka, Japan
6. Graduate School of Education, Hokkaido University, Sapporo, Japan
7. Kyoto City Youth Service Association, Kyoto, Japan