Background: Social-emotional skills are pivotal for children’s intra- and interpersonal well-being. Social-emotional learning (SEL) interventions have been shown to improve these skills, with self...Show moreBackground: Social-emotional skills are pivotal for children’s intra- and interpersonal well-being. Social-emotional learning (SEL) interventions have been shown to improve these skills, with self-awareness (SA) being the most influential intervention component. However, these interventions apply varying conceptualizations and operationalizations of SA. Therefore, the defining characteristics of SA interventions and their effect on children’s well-being are unknown. Identifying these could help educators, policy makers and researchers to optimise content and accessibility of SA intervention to the benefit of children’s mental health. Therefore, this systematic review and meta-analysis aimed to analyse the characteristics and effectiveness of currently available interventions targeting SA in children, and to examine children’s cultural background as potential moderator. Method: Eight electronic databases (PubMed, PsycINFO, EMBASE, EMCARE, ERIC, Cochrane Controlled Register of Trials (CENTRAL), Web of Science and Academic Search Premier) were searched for intervention studies investigating SA interventions in September 2019. Children’s SA was the primary outcome of interest, positive and negative mental health were the secondary. Of 7050 identified studies, 42 were included in the systematic review and 29 in the meta-analysis. Results: It was found that SA interventions had a small to moderate effect on children’s SA (g = 0.31 (0.05), 95% CI [0.21, 0.40], p < .001). Furthermore, they had a positive effect on children’s mental health. Cultural background did not significantly moderate SA intervention effectiveness. There was no evidence for publication bias. Conclusion: Overall, interventions targeting SA can positively influence the level of SA and mental health in children irrespective of their cultural backgrounds.Show less