ADHD Mind Wandering: Is It Daydreaming, or Something Else?

In one UK study, adults with ADHD averaged 25 points on a scale built to measure excessive mind wandering. The comparison group, adults without ADHD, averaged under 5.

Studies like this one lean on the standard symptom checklist clinicians use, which I think is flawed, especially for women, people of color, and the LGBTQIA+ community. I’ll come back to that. Even so, that’s a big gap.

If your mind slips away mid-conversation and you only notice once it’s already gone, that number might feel familiar. ADHD mind wandering isn’t the same thing as choosing to daydream, and what the research says about which kind shows up for a lot of us is worth knowing.

I was diagnosed with ADHD, inattentive type, at 35. So when I found studies that measure the wandering itself, not just the missed details it leaves behind, I went and read them. Here’s what I learned.

Key takeaways

• Researchers split mind wandering into two kinds: the kind you choose, and the kind that just happens.
• In the research, ADHD symptoms track the kind that just happens far more than the kind you choose.
• Adults with ADHD in a UK study reported much more mind wandering than adults without it, and it added to their day-to-day struggles.
• The studies describe groups, mostly people around 30. They can’t tell you what’s going on in your own head.
• None of this is an off switch. It’s about catching the drift sooner and coming back without the lecture.

ADHD daydreaming vs. spontaneous mind wandering

Everybody’s mind wanders. Researchers treat it as a near-universal experience; what changes from person to person is how often it happens and whether it was on purpose.

That last part is the key. Researchers split mind wandering into two kinds:

• Deliberate mind wandering: you let your thoughts roam because you want to. Planning a trip while you wash the dishes. Replaying a good conversation on a walk.
• Spontaneous mind wandering: your thoughts leave without asking. You find out later, sometimes a lot later.

Most of us would call both of those daydreaming. They feel very different from the inside, though. Deliberate wandering feels like a choice you made. Spontaneous wandering feels like finding out you left.

What the research found when it measured the drift

A scale built from what adults with ADHD said

A team at King’s College London built the Mind Excessively Wandering Scale out of how adults with ADHD described their own thinking: thoughts always on the go, jumping from one topic to the next, several running at the same time.

Then they tested it in two groups of adults. In the first, adults with ADHD averaged more than five times the comparison group’s score. In the second, nearly four times.

The part that stuck with me: the wandering explained some of people’s day-to-day struggles on top of the usual inattention and hyperactivity symptoms. In the second group, adding it raised how much of those struggles the researchers could account for from about 71% to about 79%. It wasn’t just the old symptoms under a new name.

Where these groups end and you begin: everyone was between 18 and 65, the average age was around 30, and the first group was all men. If you’re older, this research hasn’t really caught up to you yet.

The kind that shows up

A separate study asked more than 2,700 college students about both kinds of mind wandering, and about ADHD symptoms.

Once the two kinds were pulled apart, the link to ADHD symptoms stayed strong for spontaneous wandering and nearly disappeared for the deliberate kind. A smaller group who said they’d been diagnosed with ADHD reported more spontaneous wandering than matched classmates, with no real difference in the on-purpose kind.

Worth saying plainly: most of the people in that study were women in their early twenties, and the diagnoses were self-reported. I’m a man reading what they told researchers, so I’m holding this as one strong clue, not the whole picture.

The line isn’t perfectly clean, either. A 2026 study of 627 young adults found the on-purpose kind was tied to some ADHD symptoms too. So “mostly the unplanned kind” is fairer than “only.”

One more honest note about both studies. They measure ADHD against the DSM, the manual clinicians use to diagnose it. It’s the tool we’ve got, and I also think it’s flawed, especially for women, people of color, and the LGBTQIA+ community. These findings describe groups. They don’t get the final word on you.

Researchers also disagree about why any of this happens. The scale’s own authors say it’s still unclear whether excessive mind wandering is separate from inattention or sits underneath it. The field hasn’t settled that, and I’m not going to pretend it has.

Three myths about ADHD zoning out

Myth: “It’s just daydreaming. You could stop if you cared.” The research points the other way. ADHD symptoms track the kind of wandering people don’t choose, much more than the kind they do.

Myth: “Everyone’s mind wanders, so this is nothing.” Everyone in those studies scored something. The adults with ADHD scored several times higher, and it added to their struggles.

That gap is easy to hide. You can nod through a whole meeting, look completely present, and walk out with no idea what got decided. Looking present is a real skill, and it costs you: the catching up happens later, alone, with less to go on. I wrote more about that trade in ADHD masking at work.

Myth: “A quiz can tell you if it’s ADHD.” The mind wandering scale was built to help clinicians screen, not to diagnose anyone. A high score on any questionnaire is a reason to talk to someone qualified, not an answer.

Quick, necessary note on that: I’m a mental health advocate speaking from lived experience, not a doctor or a licensed professional, and nothing here replaces one.

How to work with a wandering mind

None of these steps has been tested as a treatment for mind wandering in adults with ADHD. Each one applies what the research above describes, and each is marked. Try one, keep what helps.

1. Name the drift when you catch it

1. Notice that you’ve drifted.
2. Think one word: “drifted.”
3. Go back to the last thing you clearly remember: the last sentence, the last speaker, the last step.
4. Start again from there, without a lecture to yourself.

An application. The scale’s authors point to earlier work suggesting that noticing your mind has wandered may matter for how much it costs you. If noticing late shows up for you in other places too, I wrote about interoception and body signals that arrive late.

2. Give stray thoughts a parking spot

1. Keep a notepad and pen next to you.
2. When an unrelated thought tugs at you, write three to five words.
3. Put the pen down.
4. Go back to what you were doing, and read the list when you’re done.

An application. The thought gets somewhere to wait, so you don’t have to hold it.

3. Make room for wandering on purpose

1. Pick a ten-minute window once a day.
2. Take a walk or sit somewhere without a screen.
3. Let your mind go wherever it wants.
4. When the time’s up, go back to your day.

An application of the two kinds. The deliberate kind is the one you steer. Giving it a time and place won’t stop the other kind, but it can make the wandering feel less like something that only happens to you.

4. Work in shorter blocks

1. Set a timer for 25 minutes.
2. Work until it goes off.
3. Ask yourself, “Where was my mind just now?”
4. Take a short break, then start the next block.

An application. The check-in turns step one into a habit instead of a happy accident.

5. Describe it to a clinician in plain words

1. Before your appointment, write down how the wandering feels. The scale’s own language may fit: thoughts always on the go, jumping topic to topic, several at once.
2. Add one or two recent examples.
3. Bring the note and read it out loud.

An application. If you’re still looking for someone to bring it to, CHADD (chadd.org) and ADDA (add.org) are good places to start for adult ADHD support.

Questions people ask about the drift

Something I noticed in Google’s keyword data: people in the US search “is daydreaming a symptom of ADHD” somewhere between 100 and 1,000 times a month. “Is mind wandering a sign of ADHD” came back with no data at all, and so did “what is the difference between daydreaming and mind wandering.”

We have an everyday word for the kind you choose. The other kind barely has one, which might be part of why it gets misread.

Is daydreaming a symptom of ADHD?

Not exactly, and the word “daydreaming” blurs it. Research suggests ADHD symptoms track the mind wandering people don’t choose much more than the kind they do. Only a clinician can tell you whether yours is part of ADHD.

Why does my mind wander when people are talking to me?

No study I read answers that for conversations specifically. What the research does show is that the unplanned kind of wandering shows up more for people with more ADHD symptoms, and a conversation is one more place it can land. If that’s you, step one above was built for this moment, and asking someone to repeat themselves is allowed.

Does everyone’s mind wander, or is it just ADHD?

Everyone’s does. In the research, the difference is how much and what kind: adults with ADHD reported far more, and mostly the unplanned kind.

ADHD mind wandering isn’t a vote on how much you care

For a lot of us, the hardest part of a wandering mind was never the wandering. It was what people decided it meant: that we weren’t listening, didn’t care, weren’t trying.

That’s the verdict the research knocks down. The drift most tied to ADHD symptoms is the kind nobody chooses.

It doesn’t make the cost disappear. You still miss things, and catching up still takes work. But there’s a difference between “I missed that” and “I don’t care,” and you get to stop carrying the second one.

If years of hearing otherwise have left some shame behind, my conversation with psychologist Joel Schwartz about ADHD shame and owning who you are is a good next listen.

And if you’d like the next research read in your inbox, I send one email a week. It’s called The ADHD Weekly Vibe.

Your mind wandered. You came back. That second part was always yours.

Much love. Good vibes. ‐ Ky

Sources

1. Mowlem, F. D., Skirrow, C., Reid, P., Maltezos, S., Nijjar, S. K., Merwood, A., Barker, E., Cooper, R., Kuntsi, J., and Asherson, P. (2019). Validation of the Mind Excessively Wandering Scale and the relationship of mind wandering to impairment in adult ADHD. Journal of Attention Disorders, 23(6), 624-634. DOI: 10.1177/1087054716651927

2. Seli, P., Smallwood, J., Cheyne, J. A., and Smilek, D. (2015). On the relation of mind wandering and ADHD symptomatology. Psychonomic Bulletin & Review, 22(3), 629-636. DOI: 10.3758/s13423-014-0793-0

3. Cited only to show this line is still debated: Arabacı, G., and Parris, B. A. (2026). Daily life mind wandering and its relation to symptoms of ADHD in a community sample of emerging adults. Current Psychology, 45(5). DOI: 10.1007/s12144-025-08962-x