ADHD in children is usually discussed in terms of what other people can see: the interrupting, the unfinished homework, the difficulty sitting still. The part that tends to go unmeasured is what it feels like from inside, and a trial published in Clinical child psychology and psychiatry in 2026 produced a result that sits squarely on that distinction. [pubmed-adhd-jun-2026-source]
What the researchers did
Forty young people aged 6 to 18 with ADHD were randomly assigned either to a 12-week online meditation programme delivered in weekly sessions, or to a waiting list. The programme taught a reflective practice aimed at noticing and letting go of difficult thoughts and feelings from past experience.
Everyone was assessed three times: before, immediately after, and again twelve weeks later. The measures covered parent-reported behaviour, the young person’s own report of how they felt, and a computerised attention task.
What they found
The headline outcome did not move. On parent-reported behaviour, the sort of thing captured as aggression or rule-breaking, there was no meaningful difference between the groups.
Anxiety was a different story. The meditation group showed a clear reduction, and critically it was still there at the three-month follow-up rather than fading with the end of the sessions. Participants also reported feeling less sad and worried over time, though that emerged more slowly.
On the attention task, participants made fewer errors of the press-when-you-should-have-waited kind, while taking slightly longer to respond. That pattern is usually read as a shift towards thinking before acting rather than as sharper attention as such.
How much weight to give it
Forty participants split across two groups is small, and it is small in a way that matters: a trial this size can detect only fairly large effects, so “no difference in behaviour” is weaker evidence of absence than it sounds. The comparison group was a waiting list rather than an equivalently time-consuming activity, which means some of the benefit could come from the attention and structure rather than from the meditation.
The persistence of the anxiety finding is the most interesting part. Effects that survive three months past the end of an intervention are less easily explained by enthusiasm.
What this means in practice
The useful reframing is that this is evidence about anxiety in young people with ADHD, not about ADHD. Anxiety travels with ADHD often and gets treated less often, partly because the visible behaviour is what prompts the referral.
If you are a parent judging whether something is working, this trial contains a practical warning: your child may register a change well before you can see one. Asking them directly is not a soft measure. In this study it was the only one that picked up the effect.
Is anxiety part of the picture too?
For a parent, or an older teenager answering for themselves. Tick what has been true recently.
0 of 6 ticked
This looks like anxiety alongside ADHD rather than part of it, and it is treatable in its own right. Bring it up specifically at the next appointment, because the ADHD tends to dominate the conversation by default.
A couple of these could be an ordinary difficult stretch. Watch whether they cluster around particular situations, and mention it if they persist for more than a few weeks.
One item alone says little. Asking directly how they feel, rather than watching how they behave, is still worth doing.
The source
These findings are drawn from “Emotional and Behavioral Effects of an Online Self-Reflective Meditation Program in Youth With ADHD: A Randomized Clinical Trial” (Lee SA, Yun M, Lee H, et al., 2026), published in Clinical child psychology and psychiatry. Read the full study on PubMed.