A study published in The Journal of Child Psychology and Psychiatry examines whether a half-hour, self-administered, single-session intervention (SSI) teaching growth mindset can reduce depression and anxiety and strengthen perceived control in high-risk teenagers.
Teenagers (aged 12–15) and their parents completed separate baseline questionnaires about the young person’s anxiety and depressive symptoms, which were then repeated over a nine-month follow-up period. Teenagers also reported on their perceived behavioural control. The teenagers were then randomised to receive either a 30-minute computer-guided intervention teaching growth mindset (the belief that personality is malleable), or a supportive therapy control.
Compared to the control group, teenagers who received the SSI had greater improvements in parent-reported depression (effect size = +0.60) and anxiety (+0.28), as well as self-reported depression (+0.32) and perceived behavioural control (+0.29) from baseline to nine-month follow-up. The effects of the intervention on self-reported anxiety were +0.36.
The report concludes that the findings suggest a promising, scalable SSI for reducing anxiety and depression in high-risk teenagers.
Source: A single-session growth mindset intervention for adolescent anxiety and depression: 9-month outcomes of a randomized trial (September 2017), The Journal of Child Psychology and Psychiatry