The Effectiveness of Engagement-based Personalization of a Digital Mental Health Intervention

"For the study, 27 versions of a 2-week mobile wellbeing intervention are created. These versions vary on content (Cognitive Behavioral Therapy, meaning, positive psychology), feedback (text, text with avatar, pre-recorded video) and design (non-gamified, competitively gamified, storyline gamified). At baseline, participants preview all variations and indicate their expected engagement. Participants in the personalized condition will receive the optimal combination of content, feedback and design, based on their baseline engagement scores.~Each version of the intervention consists of a module per day. Each module contains psychoeducation and exercises based on content of the version. Moreover, each module contains pre-specified general feedback and supportive messages."

"For the study, 27 versions of a 2-week mobile wellbeing intervention are created. These versions vary on content (Cognitive Behavioral Therapy, meaning, positive psychology), feedback (text, text with avatar, pre-recorded video) and design (non-gamified, competitively gamified, storyline gamified). At baseline, participants preview all variations and indicate their expected engagement. Participants in the non-personalized condition will receive a random version of the intervention.~Each version of the intervention consists of a module per day. Each module contains psychoeducation and exercises based on content of the version. Moreover, each module contains pre-specified general feedback and supportive messages."