1. Department of Online Learning and Instruction, Faculty of Educational Sciences, Open Universiteit, Heerlen, The Netherlands
2. Section of Educational Sciences, and LEARN! Research Institute, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
3. Department of Teacher Education, Fontys University of Applied Sciences, Sittard, The Netherlands
4. Erasmus School of Social and Behavioural Sciences, Erasmus Universiteit Rotterdam, Rotterdam, The Netherlands
5. Zuyd University of Applied Sciences, Heerlen, The Netherlands