Mana Azizsoltani (Hospitality) & Ismael Gomez-Talal (International Gaming Institute) published an article titled 'Building a brief multidomain questionnaire for gambling dual disorder: Psychometric validation and RDoC-based dimensional structure' in the International Journal of Methods in Psychiatric Research. This study yielded a reliable and valid instrument for diagnosing gambling disorder within a dual-disorder framework. This paper is the first of a series of articles hailing from an international collaboration between UNLV, the University of Rey Juan Carlos, the University of Francisco de Vitoria, the Gregorio Marañon Hospital, and the Lopez Ibor Clinic in Madrid, Spain.