Engaging Users in the Behavior Change Process With Digitalized Motivational Interviewing and Gamification: Development and Feasibility Testing of the Precious App

Johanna Nurmi   ^{1, 2} , MSocSc ;   Keegan Knittle   ¹ , PhD ;   Todor Ginchev   ³ , MS ;   Fida Khattak   ³ , MS ;   Christopher Helf   ⁴ , MSc ;   Patrick Zwickl   ⁵ , PhD ;   Carmina Castellano-Tejedor   ^{6, 7} , PhD ;   Pilar Lusilla-Palacios   ^{8, 9} , PhD ;   Jose Costa-Requena   ³ , PhD ;   Niklas Ravaja   ¹⁰ , PhD ;   Ari Haukkala   ^{1, 11} , PhD

¹ Discipline of Social Psychology, Faculty of Social Sciences, University of Helsinki, Helsinki, Finland

² Behavioural Science Group, Primary Care Unit, University of Cambridge, Cambridge, United Kingdom

³ Communications and Networking Department, School of Electrical Engineering, Aalto University, Espoo, Finland

⁴ Department of Entertainment Computing, University of Vienna, Vienna, Austria

⁵ Center For Digital Safety And Security, Austrian Institute of Technology, Vienna, Austria

⁶ Department of Psychiatry, University Hospital Vall d’Hebron, Vall d’Hebron Institute of Research, Barcelona, Spain

⁷ Department of Basic Psychology, Grup de Recerca en Estrès i Salut, Autonomous University of Barcelona, Bellaterra, Spain

⁸ Servicio de Psiquiatría, Hospital Universitari Vall d’Hebron, Departament de Psiquiatria i Medicina Legal, Universitat Autònoma de Barcelona, Barcelona, Spain

⁹ Centro de Investigación Biomédica en Red de Salud Mental, Instituto de Salud Carlos III, Vall d’Hebron Institut de Recerca, Barcelona, Spain

¹⁰ Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland

¹¹ Helsinki Collegium for Advanced Studies, University of Helsinki, Helsinki, Finland