Enhancing mental wellbeing by changing mindsets? Results from two randomized controlled trials.

Improving mental wellbeing is often targeted with behavioral interventions, while mindset interventions might be more appealing as they require less time and effort. In addition to recent experimental studies demonstrating that attributional beliefs can be changed to improve emotional wellbeing and performance, the current study examines whether a positive change in people's beliefs about stress and life philosophy enhances emotional, social and psychological wellbeing using brief educational interventions. Two parallel double-blind randomized controlled trials were conducted. Study 1 (N = 106; 62.3% female, mean age 36.0) compared an educational video about the benefits of a stress-is-enhancing mindset versus an active control video. In Study 2 (N = 136; 57.4% female, mean age 35.7), educational texts about the benefits of a stress-is-enhancing mindset and holding a life-is-long-and-easy mindset were compared to an active control text. Results of multilevel growth curve modeling showed that a stress mindset could be significantly changed using an educational video or text, while the change in the philosophies of life mindset did not significantly differ between conditions. Furthermore, none of the manipulations were able to sustain the positive change in mindset which might explain why there was no significant increase in mental wellbeing compared to control. To have a lasting effect on people's mental wellbeing, a change in mindset might need to be embodied in everyday life. Future research should investigate simple versus intensive interventions with longer follow-up time to examine whether and how a mindset can be sustainably changed to promote flourishing mental health in the general population.