- Dijxhoorn, A.F.
- Increasing Children's Happiness. A Controlled Study on the Effectiveness of Lessons in Happiness in Grades 7 and 8 of Primary School. A Pilot.
- Master Thesis, Leiden University, 2011, Leiden, Netherlands
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- Yes, but not yet entered.