Mindfulness improves accuracy more than speed

What the paper gives us.

1. 01

   Accuracy, not acceleration

   The review found improvements in executive attention, working-memory accuracy, inhibition, shifting, and sustained attention. It did not find gains in processing speed.

2. 02

   The practice matters

   Face-to-face delivery and some higher-need groups showed stronger effects. A generic claim that any meditation app will improve cognition would reach beyond the evidence.

3. 03

   Small effects can be useful

   For work involving careful reading, review, or judgment, a modest accuracy improvement may be more relevant than a promise of feeling faster.

What was actually studied.

Design

Meta-analysis of randomized controlled trials

Sample

111 RCTs · 9,538 participants

Population

Meditation-naive adults across healthy, medical, and elevated-symptom samples.

Comparison

Mindfulness-based interventions versus waitlist, no-treatment, or active controls.

Outcomes

Global cognition and 15 cognitive subdomains.

Effect

Versus active controls, effects ranged from g = 0.192 to 0.394 for supported subdomains.

What this may mean for work.

Mindfulness is most plausibly useful as attentional practice: noticing drift and returning to the task. Frame it as a way to improve the quality of engagement, not as a shortcut to speed or a universal fix for distraction.

This is VSX's practical inference, not a claim directly established by the study.

Practice the return

Where the claim stops.

• Interventions and control conditions varied substantially across trials.
• Some outcomes had moderate-to-large heterogeneity.
• The review does not establish the minimum effective practice duration for an individual.