1. Research Institute of Child Development and Education, University of Amsterdam, Amsterdam, Netherlands
2. HAN University of Applied Sciences, Nijmegen, Netherlands
3. Stevig, Expert Centre for People with Mild Intellectual Disabilities, Gennep, Netherlands
4. KenVaK, Research Centre for the Arts Therapies, Heerlen, Netherlands
5. Department of Psychology, University of Amsterdam, Amsterdam, Netherlands
6. Faculty of Healthcare, Zuyd University of Applied Sciences, Heerlen, Netherlands
7. Faculty of Psychology, Open University, Heerlen, Netherlands