Thirteen minutes a day, eight weeks to show
Non-meditators doing 13 minutes of guided meditation daily improved attention and working memory after eight weeks — but not after four.
The short version
You may not need long retreats or hour-long sessions to see benefits from meditation. In this randomized trial, people with no meditation experience who listened to a 13-minute guided meditation every day improved their attention, working memory and recognition memory compared with people who listened to podcasts for the same time. The catch: the benefits showed up after eight weeks, not after four.
What the researchers did
Julia Basso, Wendy Suzuki and colleagues at New York University randomly assigned non-meditators aged 18 to 45 to one of two daily routines for eight weeks:
- a 13-minute guided meditation, or
- a 13-minute podcast, as an active control that matched the time commitment and the act of sitting down to listen to something.
Participants were tested at the start, at four weeks and at eight weeks on mood, attention, working memory, recognition memory and, at the end, their response to a standard laboratory stress test. It was a small trial, of around 42 people.
What they found
Compared with the podcast group, eight weeks of brief daily meditation:
- improved attention, working memory and recognition memory;
- reduced negative mood;
- lowered anxiety during the stress test.
At four weeks, these differences had not yet appeared. The authors suggest this points to a minimum effective dose for short daily practice. They also found that changes in emotional regulation were more closely tied to improved mood than to improved cognition.
Limits and caveats
This was a single, small study, so the size of each effect is uncertain and the four-versus-eight-week finding needs replicating before it is treated as a rule. The participants were young and middle-aged adults volunteering for a meditation study, who may have been more motivated than average. Daily practice at home is also harder to verify than practice in a lab.
What it means for how you work
A short daily practice is realistic for most people — about the length of a coffee break — and this study suggests it can be enough. The more important lesson is about expectations: judge it after two months, not two weeks. If you keep a time log, putting a short daily practice on it makes the habit visible and makes it easier to tell later whether your focus changed. Larger reviews of mindfulness and cognition, such as the 111-trial meta-analysis, support the same direction of effect.