1. Health Research Centre and Department of Education, University of Almería, Spain
2. Department of Psychology, University of Almería, Spain
3. Department of Psychology and Sociology, University of Zaragoza, Spain
4. Centre of Excellence in Responsible Gaming, University of Gibraltar, Gibraltar, Gibraltar
5. Institute of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary
6. College of Education, Psychology and Social Work, Flinders University, Adelaide, Australia
7. Psychology Department, Nottingham Trent University, UK