1. Centre for Research and Intervention in Education, Faculty of Psychology and Educational Sciences, University of Porto, 4200-135 Porto, Portugal
2. Centre for Research and Intervention in Education, Department of Education and Psychology, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
3. School of Education, University of Galway, H91 TK33 Galway, Ireland
4. Management Information Systems, Faculty of Economics and Administrative Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey