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Mindfulness enhances cognitive functioning: a meta-analysis of 111 randomized controlled trials.

Nur Hani Zainal, Michelle G Newman

Health Psychology Review June 2024 DOI: 10.1080/17437199.2023.2248222 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Meta-analysis Randomized Peer reviewed
Sample size 9,538
Population Meditation-naive participants across 111 randomized controlled trials, including healthy controls, people with elevated psychiatric symptoms, and medical samples
Topics Meditation
Keywords Mindfulness-based interventions Cognitive functioning Executive function Meta-analysis Randomised controlled trials
Key findings MBIs yielded small-to-moderate significant effects on global cognition and six cognitive subdomains (executive attention, working memory accuracy, inhibition accuracy, shifting accuracy, sustained attention, subjective cognitive functioning; g = 0.257-0.643 vs waitlist/no-treatment; g = 0.192-0.394 vs active controls), but did not impact EF latency indices, verbal fluency, processing speed, episodic memory, or cognitive error. The authors conclude these effects are small-to-moderate yet practically meaningful, favoring accuracy-based over latency-based measures.

Abstract

Currently no comprehensive meta-analysis of MBI efficacy on global and unique cognitive subdomains exist. Examined the effects of MBIs on global cognition and 15 cognitive subdomains. Inclusion criteria: meditation naïve participants; randomized controlled trial; outcome included one objective or subjective cognitive functioning measure; primary focus was teaching mindfulness skills. Exclusion criteria: inadequate data; one-session ; control condition contained any MBI component. Robust variance estimation and moderator analyses controlling for presence of treatment fidelity were conducted. One-hundred-and-eleven RCTs (n = 9,538) met eligibility criteria. MBIs had small-to-moderate significant effects on global cognition, executive attention, working memory accuracy, inhibition accuracy, shifting accuracy, sustained attention, and subjective cognitive functioning (vs. waitlist/no-treatment, g = 0.257-0.643; vs. active controls, g = 0.192-0.394). MBIs did not impact executive functioning (EF) latency indices, verbal fluency, processing speed, episodic memory, and cognitive error. Treatment effects were stronger for those with elevated psychiatric symptoms vs. healthy controls, and medical samples, studies with complete-case (vs. intention-to-treat) analysis, face-to-face (vs. self-guided) delivery, and non-standard (vs. standard MBI). MBIs consistently yielded small-to-moderate yet practically meaningful effect sizes on global cognition and six cognitive subdomains that captured accuracy vs. latency-based indices of EF and sustained accuracy.

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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