Mobile-based positive self-talk interventions for negative moods: the moderating role of expressive suppression

This study investigated the efficacy of mobile-based positive self-talk interventions for regulating negative emotions (anger and sadness), with a focus on the moderating role of expressive suppression in a collectivist culture. Two experiments were conducted using 3D graphic videos to induce mood states and tailored positive self-talk messages for intervention. Study 1 examined the effects of tailored positive self-talk messages on anger and sadness, while Study 2 replicated these findings and explored the moderating role of expressive suppression. Results showed that positive self-talk interventions significantly reduced negative emotions. Notably, the intervention was particularly effective for individuals with high expressive suppression, suggesting its potential usefulness in cultures where emotional suppression is prevalent. This study contributes to the growing body of research on mHealth interventions and highlights the importance of considering individual differences and cultural factors in the design of personalised mental health interventions.