Key Takeaway
Largest meta-analysis to date (111 RCTs, n=9,538) found mindfulness has small-to-moderate effects on global cognition, executive attention, working memory, and processing speed.
Summary
This is the largest meta-analysis to date examining the effects of mindfulness-based interventions (MBIs) on cognitive functioning, encompassing 111 randomized controlled trials with 9,538 total participants. The study was published in Health Psychology Review and provides comprehensive evidence for mindfulness as a cognitive enhancement tool.
The authors analyzed RCTs comparing mindfulness-based interventions to control conditions across multiple cognitive domains, including global cognition, executive attention, working memory, and processing speed. Both healthy adults and clinical populations were represented in the included trials.
Results showed that mindfulness-based interventions produced small-to-moderate improvements across cognitive domains compared to control conditions. Effects were observed for global cognition, executive attention, working memory, and processing speed. These findings suggest that the attentional training inherent in mindfulness practice translates to measurable improvements in objective cognitive performance.
The breadth and scale of this meta-analysis substantially strengthens the evidence base for mindfulness as a cognitive intervention, moving beyond earlier smaller reviews that found inconsistent results. The consistent effects across multiple cognitive domains suggest a general cognitive benefit rather than domain-specific enhancement.
Methods
- Systematic review and meta-analysis of 111 RCTs - Total sample size: n=9,538 participants - Included studies comparing mindfulness-based interventions to control conditions - Assessed multiple cognitive domains: global cognition, executive attention, working memory, and processing speed - Used standardized effect sizes for cross-study comparisons
Key Results
- Small-to-moderate effect sizes favoring mindfulness across cognitive domains
- Significant improvements in global cognition vs. controls
- Positive effects on executive attention and working memory
- Processing speed also improved with mindfulness practice
- Effects were consistent across diverse populations and MBI formats
Figures
Figure 1
Limitations
- Heterogeneity in mindfulness intervention types and durations across studies
- Variable quality of included RCTs
- Many studies used passive rather than active control conditions
- Cognitive outcome measures varied widely across included trials
- Publication bias may inflate effect size estimates