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Mindfulness-based interventions in schools—a systematic review and meta-analysis

Charlotte Zenner, Solveig Herrnleben-Kurz, H. Walach

Frontiers in Psychology June 30, 2014 DOI: 10.3389/fpsyg.2014.00603 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Systematic review Peer reviewed
Sample size 2,224
Population Students in grades 1 to 12; 1,348 instructed in mindfulness and 876 controls
Intervention School-based mindfulness interventions
Topics Meditation
Keywords Education
Key findings School-based mindfulness interventions showed moderate overall effects (Hedge's g = 0.40 between groups, 0.41 within groups), with significant between-group effects for cognitive performance (g = 0.80), stress (g = 0.39), and resilience (g = 0.36), but not for emotional problems (g = 0.19) or third-person ratings (g = 0.25). The authors conclude the field is nascent, with great heterogeneity and many underpowered studies, and that mindfulness holds promise particularly for cognitive performance and stress resilience.

Abstract

Mindfulness programs for schools are popular. We systematically reviewed the evidence regarding the effects of school-based mindfulness interventions on psychological outcomes, using a comprehensive search strategy designed to locate both published and unpublished studies. Systematic searches in 12 databases were performed in August 2012. Further studies were identified via hand search and contact with experts. Two reviewers independently extracted the data, also selecting information about intervention programs (elements, structure etc.), feasibility, and acceptance. Twenty-four studies were identified, of which 13 were published. Nineteen studies used a controlled design. In total, 1348 students were instructed in mindfulness, with 876 serving as controls, ranging from grade 1 to 12. Overall effect sizes were Hedge's g = 0.40 between groups and g = 0.41 within groups (p < 0.0001). Between group effect sizes for domains were: cognitive performance g = 0.80, stress g = 0.39, resilience g = 0.36, (all p < 0.05), emotional problems g = 0.19 third person ratings g = 0.25 (both n.s.). All in all, mindfulness-based interventions in children and youths hold promise, particularly in relation to improving cognitive performance and resilience to stress. However, the diversity of study samples, variety in implementation and exercises, and wide range of instruments used require a careful and differentiated examination of data. There is great heterogeneity, many studies are underpowered, and measuring effects of Mindfulness in this setting is challenging. The field is nascent and recommendations will be provided as to how interventions and research of these interventions may proceed.

Comparable studies

Other systematic reviews and meta-analyses on meditation, most cited first.

Study Year Design Participants
Meditation Programs for Psychological Stress and Well-being Diverse adult clinical populations 2014 Meta-analysis n = 3,515
Mindfulness-Based Stress Reduction for Stress Management in Healthy People: A Review and Meta-Analysis Healthy subjects 2009 Systematic review and meta-analysis
The psychological effects of meditation: A meta-analysis. Nonclinical groups of adult meditators 2012 Meta-analysis n = 163
Efficacy of Mindfulness-Based Cognitive Therapy in Prevention of Depressive Relapse Adults with recurrent depression in full or partial remission 2016 Meta-analysis of individual patient data from randomized controlled trials n = 1,258
Mindfulness‐Based Stress Reduction and Mindfulness‐Based Cognitive Therapy – a systematic review of randomized controlled trials 2011 Systematic review

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