1. Department Practical Theology, Protestant Theological University, Amsterdam, The Netherlands;
2. Department Research Centre, Driestar Christian University for Teacher Training, Gouda, The Netherlands;
3. VU University, Amsterdam, The Netherlands;
4. Department Practical Theology, Evangelical Theological Faculty, Leuven, Belgium;
5. Department Practical Theology, Theological University of Apeldoorn, Apeldoorn, The Netherlands;
6. Department Practical Theology, University of Stellenbosch, Stellenbosch, South Africa