An enhanced psychological mindset intervention to promote adolescent wellbeing within educational settings: A feasibility randomized controlled trial

Objective: This randomized controlled trial feasibility study aimed to investigate a single‐session mindset intervention, incorporating third‐wave constructs, within educational settings as a universal tool to promote emotional wellbeing. Method: Eighty adolescents (age M = 16.63) were randomized to the 30‐min computer intervention or a usual curriculum waitlist. Outcome measures were administered at baseline, posttreatment, 4‐week, and 8‐week follow‐ups. Results: Student feedback about the intervention and trial procedure was mainly positive. Participants engaged with the intervention content and data were suggestive of possible small–large intervention effects for targeted mechanisms of personality mindset and psychological flexibility. Between‐group differences over time across wellbeing outcomes of self‐compassion, self‐esteem, low mood, and anxiety also yielded some promising results, though assessments of reliable change were less clear. No harm was reported.