By John M. de Castro, Ph.D.
“Mindfulness helps us focus: Studies suggest that mindfulness helps us tune out distractions and improves our memory and attention skills.” – Leah Weiss
Mindfulness is defined by Jon Kabat-Zinn as “the awareness that emerges through paying attention on purpose, in the present moment, and nonjudgmentally to the unfolding of experience moment by moment.” In its most basic form, mindfulness training is attention training. As a result, it’s been assumed that mindfulness training would improve attentional ability. It was also assumed that the ability to focus and attend without mind wandering would improve higher level thinking, cognition, sometimes known as executive function.
Although there have been a number of studies to investigate the relationship of mindfulness to attentional ability and executive function, they have varied widely in the form of mindfulness training and the methods to measure attention and executive function. In today’s Research News article “Cognitive effects of MBSR/MBCT: A systematic review of neuropsychological outcomes.” See:
or see summary below. Lao and colleagues review the published research literature on the effects of mindfulness training on attention and executive function. They restricted the reviewed studies to only those that studied adults, who were randomly assigned to either an 8 to 12-week mindfulness training or a control condition, that employed either Mindfulness Based Stress Reduction (MBSR) and Mindfulness-Based Cognitive Therapy (MBCT) as the mindfulness training methods, and that measured attention and/or executive function with an objective measure. The literature search produced 18 articles that met all of the criteria. Eleven of the studies used healthy adults while the other 7 were either actively depressed or in remission patients.
They found that the studies that investigated attentional or executive attentional abilities only one had a statistically significant improvement in attention from mindfulness training, although all the rest showed mean attentional improvement that was not statistically significant. This contrasted to previous reviews that found significant effects of mindfulness training on attentional ability. But, many of the studies included in these other reviews were not randomized but compared long-term meditators to novices. This suggests that improvement in attentional ability may not result from short-term practice, but require long-term mindfulness training to develop.
Similarly, they found that there were mixed findings for higher level thinking, executive functions, with some studies finding significant results while others finding positive changes on the average, but that were not statistically significant. There were, however, significant effects on the awareness of awareness, meta awareness, and the ability to alter thinking, cognitive flexibility. These are significant as they suggest that even though short-term practice was involved, the highest levels of cognitive processing are improved with mindfulness training. Finally, they found that mindfulness training produced statistically significant improvements is memory function, particularly short-term, working, memory.
This literature summary, however, was not a meta-analysis where the results of multiple studies are summed and statistically evaluated. Rather Lao and colleagues simply reported on the statistical significance of individual studies. This process lacks the statistical power of a meta-analysis. Since many of the findings were in the direction of improvement, a meta-analysis may well have shown significant overall effects for mindfulness training where few or none were present in the individual studies. Hence, the literature summary was able to detect several significant cognitive and memory effects of mindfulness training, but the jury is still out on its ability to affect other executive function and attentional abilities.
So, think about it: mindfulness may improve cognitive functions.
“Cultivating mindfulness is not an easy task, but with persistence and practice we can make significant changes in the way we use our attention. We can improve concentration, our intimate relationships, our spiritual practice, and our overall mental health. What’s at stake is nothing less than our experience of life itself.” – ToDo Institute
CMCS – Center for Mindfulness and Contemplative Studies
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Study Summary
Lao SA, Kissane D, Meadows G. Cognitive effects of MBSR/MBCT: A systematic review of neuropsychological outcomes. Conscious Cogn. Volume 45, October 2016, Pages 109–123, http://dx.doi.org/10.1016/j.concog.2016.08.017
Highlights
- Review of evidence for whether MBSR and MBCT improve cognitive performance.
- Attention and executive functions were not improved through MBSR/MBCT.
- Preliminary evidence for working memory, meta-awareness and cognitive flexibility improvements.
Abstract
Mindfulness is theorised to improve attention regulation and other cognitive processes. This systematic review examines whether 8-week standardised and manualised mindfulness training programs such as Mindfulness Based Cognitive Therapy (MBCT) and Mindfulness Based Stress Reduction (MBSR) enhances attention, memory and executive function abilities measured by objective neuropsychological tests. Seven databases were searched resulting in 18 studies meeting inclusion criteria for review. Overall studies did not support attention or executive function improvements. We found preliminary evidence for improvements in working memory and autobiographical memory as well as cognitive flexibility and meta-awareness. Short-term mindfulness meditation training did not enhance theorised attentional pathways. Results call into question the theoretical underpinnings of mindfulness, further highlighting the need for a comprehensive theoretical framework.