Despite the popularity of growth mindset interventions in schools, positive results are rare and possibly spurious due to inadequately designed interventions, reporting flaws, and bias

Macnamara, B. N., & Burgoyne, A. P. (2022). Do growth mindset interventions impact students’ academic achievement? A systematic review and meta-analysis with recommendations for best practices. Psychological Bulletin, Nov 2022. https://doi.org/10.1037/bul0000352

Abstract: According to mindset theory, students who believe their personal characteristics can change—that is, those who hold a growth mindset—will achieve more than students who believe their characteristics are fixed. Proponents of the theory have developed interventions to influence students’ mindsets, claiming that these interventions lead to large gains in academic achievement. Despite their popularity, the evidence for growth mindset intervention benefits has not been systematically evaluated considering both the quantity and quality of the evidence. Here, we provide such a review by (a) evaluating empirical studies’ adherence to a set of best practices essential for drawing causal conclusions and (b) conducting three meta-analyses. When examining all studies (63 studies, N = 97,672), we found major shortcomings in study design, analysis, and reporting, and suggestions of researcher and publication bias: Authors with a financial incentive to report positive findings published significantly larger effects than authors without this incentive. Across all studies, we observed a small overall effect: d¯ = 0.05, 95% CI = [0.02, 0.09], which was nonsignificant after correcting for potential publication bias. No theoretically meaningful moderators were significant. When examining only studies demonstrating the intervention influenced students’ mindsets as intended (13 studies, N = 18,355), the effect was nonsignificant: d¯ = 0.04, 95% CI = [−0.01, 0.10]. When examining the highest-quality evidence (6 studies, N = 13,571), the effect was nonsignificant: d¯ = 0.02, 95% CI = [−0.06, 0.10]. We conclude that apparent effects of growth mindset interventions on academic achievement are likely attributable to inadequate study design, reporting flaws, and bias.

Impact Statement: This systematic review and meta-analysis suggest that, despite the popularity of growth mindset interventions in schools, positive results are rare and possibly spurious due to inadequately designed interventions, reporting flaws, and bias.