1. Faculty of Psychology, Campus de Somosaguas, Universidad Complutense de Madrid, Ctra. de Húmera s/n, Pozuelo de Alarcón, 28223 Madrid, Spain
2. Universidad Francisco de Vitoria, Psychology, Carretera de Pozuelo a Majadahonda km. 1.800, Pozuelo de Alarcón, 28223 Madrid, Spain
3. Centro de Estudios Universitarios Cardenal Cisneros, University College, Department of Psychology, Calle del General Díaz Porlier 58, 28006 Madrid, Spain
4. Hospital Universitario Fundación Jiménez Díaz, Servicio de Psiquiatría, Avda. Reyes Católicos 2, 28040 Madrid, Spain
5. EA 4430 CLIPSYD Université Paris Nanterre, 92000 Paris, France
6. Hôpital Universitaire Raymond Poincaré, AP-HP Garches, CESP, U1018 INSERM UPS UVSQ 2, 92380 Garches, France
7. EA 2931, Centre de Recherches sur le Sport et le Mouvement (CESRM), Université Paris Nanterre, 92000 Nanterre, France
8. Laboratoire EA 4430, CLIPSYD Paris Nanterre, UPN, Université Paris Nanterre, 92000 Nanterre, France
9. Laboratoire APEMAC EA 4360, Université de Lorraine, 57000 Metz, France
10. Psychology Department, Centre d’Etudes et Recherches en Psychopathologie et Psychologie de la Santé (EA7411), Université Toulouse Jean Jaurès, 31058 Toulouse, France
11. Department of Psychology, The John Paul II Catholic University of Lublin, al. Racławickie 14, 20-950 Lublin, Poland
12. Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, P.O. Box 5000, 90014 Oulu, Finland
13. School of Health and Social Care, Oulu University of Applied Sciences, 90570 Oulu, Finland
14. Department for Psychiatry and Psychotherapy, University of Lübeck, 23538 Lübeck, Germany
15. Institute of Psychology, ELTE Eötvös Loránd University, 1064 Budapest, Hungary
16. An der Questenhorst 7, 30173 Hannover, Germany, Psychotherapeutical Office Pilgramm, Karmarschstr. 44, 30159 Hannover, Germany
17. LPS EA 849, Aix-Marseille University, 13007 Marseille, France
18. Psychologie, Langues, Lettres et Histoire Département, University of Nîmes, 30000 Nîmes, France
19. Medical Research Center Oulu, Oulu University Hospital, University of Oulu, 90220 Oulu, Finland
20. Clinical Neuroscience Research Group, Department of Psychology, University of Oslo, Forskningsveien 3A, 0373 Oslo, Norway
21. Department of Developmental and Educational Psychology, University of Valencia, 46010 Valencia, Spain
22. Department of Basic Psychology, University of Valencia, 46010 Valencia, Spain
23. Département de Psychologie, Université du Québec à Montréal, 514-987-3000 Poste 4553, Montréal, QC H2L 2C4, Canada
24. Specialized Facility in Behavioral Addiction ReConnecte, Department of Mental Health and Psychiatry, University Hospitals of Geneva, Rue du Grand-Pré 70 c, 1202 Geneva, Switzerland
25. Psychological and Sociological Research and Training Unit, Department of Psychiatry, University of Geneva, 1205 Geneva, Switzerland
26. Centre of Excellence in Responsible Gaming, University of Gibraltar, Gibraltar GX11 1AA, Gibraltar
27. International Gaming Research Unit, Psychology Department, Nottingham Trent University, Burton Street, Nottingham NG1 4FQ, UK
28. Cyberpsychology Research Group, Psychology Department, Nottingham Trent University, Nottingham NG1 4FQ, UK