Mind-wandering
Mind-wandering is what happens when attention leaves the task in front of us and goes to our own thoughts: a memory, a plan, an imagined conversation. Studies that interrupt people at random moments find that it fills a large share of waking life. It has costs in some settings and possible uses in others, and several popular claims about it are still argued over.
Dana is reading a contract. By the bottom of the page she has been planning Saturday's dinner for a full minute and cannot say what the page said. She goes back to the top.
It isn't a diagnosis. Mind-wandering is an ordinary experience. Studies of differences between people link more unintended wandering with more symptoms of attention-deficit/hyperactivity disorder and obsessive-compulsive disorder, but that is a statistical link across groups of people and says nothing about any one person. Ongoing trouble with attention or mood has many possible causes, and a doctor or therapist is the place to look into them.
How it shows
At work
Reading the same line of an email three times. Reaching the end of a meeting and finding that the last few minutes did not register. Ideas that seem to turn up on a walk or in the shower rather than at the desk.
In close relationships
Nodding while someone talks and then being unable to say what they said. Planning a reply while the other person is still finishing. Seeing a face go blank across the table and wondering where the person went.
In ourselves
Surprise, partway through a task, at what we have been thinking about. Sometimes mild annoyance at finding the mind elsewhere, and sometimes a sense that the break was welcome.
How it differs from similar ideas
Rumination and worry
Rumination, which includes worry, goes over the same negative content again and again, either a past event or a feared future. Mind-wandering covers any thought unrelated to what we are doing. In the 2010 phone study, 42.5% of wandering was to pleasant topics, 31% to neutral topics and 26.5% to unpleasant ones. A 2013 smartphone study found that wandering predicted feeling worse later only when its content was negative, which is where the two ideas overlap.
Flow
Flow is deep absorption in an activity, with self-consciousness fading and time seeming to change. In mind-wandering the activity is what loses the attention. The two describe opposite relations between a person and what they are doing.
Mindfulness
Mindfulness is attention to what is happening in the present moment. Mind-wandering is attention moving off to something else, and it is the drift that mindfulness training is often used to notice. A small trial of a two-week mindfulness class, described under the questions below, found less mind-wandering afterward.
Dissociation
Everyday zoning out is often ordinary mind-wandering, and most people come back from it knowing where their thoughts had gone. Dissociation is a wider disruption of awareness, memory, identity or perception. Its clinical forms involve feeling detached from oneself or from the world, and are described on their own page.
ADHD in adults
Studies find that people who report more unintentional mind-wandering also report more attention-deficit symptoms. Mind-wandering by itself is common in everyone, so a drifting mind says nothing on its own about the condition.
What it doesn’t mean
By itself, it doesn't mean a lack of focus or interest. It turns up during almost everything people do. In the 2010 phone study, minds wandered in at least 30% of the reports taken during every activity except one. Lower motivation for a task does go with more wandering on purpose, but a drifting mind alone says little about why it drifted.
It doesn't always mean a problem. The studies find costs in some settings, such as driving and reading, and possible uses in others, such as planning ahead. Some drifting is chosen, and the research finds that chosen and unchosen drifting may behave differently.
An example: Priya's Tuesday, three drifts
Priya works in a clinic's billing office. On this Tuesday her attention leaves what she is doing three times, in three different places.
- Reading a report, 2:10 p.m. Her eyes keep moving down the page while she replays a remark from lunch. At the bottom of page four she realizes she cannot recall page three. She goes back and reads it again.
- Driving home, 5:40 p.m. The road is one she has driven hundreds of times. She is rehearsing what she will say to her sister about the weekend. The light ahead turns green and the car behind her taps its horn. She had not seen it change.
- Washing dishes, 7:30 p.m. The water is warm, the task needs almost nothing from her, and her thoughts drift to a scheduling problem that has nagged at her all day. Halfway through rinsing a pan she sees a way to rearrange two appointments, and dries her hands to write it down.
- Later that night If a researcher had paused her at each of the three moments and asked whether her mind was on the task, she would have answered no every time. The first two felt like losing something. The third felt like finding something.
One question from a thought probe, whether the mind was on the task, gives all three drifts the same label. What differs is whether the drift was chosen, what the task demanded and what it cost or gave.
The research below describes each part of the story. How often it happens and what it does to mood comes from the large phone study. The moment at the wheel is a mild version of what the study of injured drivers looked at, which was intense mind-wandering before a crash. The dishwater idea matches the claim that undemanding moments let useful thoughts surface, a claim whose lab support is mixed. And whether a drift was chosen is the split the 2016 review draws between intentional and unintentional mind-wandering.
A different story would point elsewhere. If Priya had been unable to bring her attention back to any task for weeks, or if her thoughts had been the same painful loop each time, that would be closer to the patterns described under rumination and attention difficulties. If she had felt cut off from her surroundings, as though they were unreal, the dissociation page describes that.
What the research shows
Researchers mostly detect mind-wandering with thought probes, brief questions that interrupt a person at random moments to ask whether their mind was on the task or elsewhere. Sampling people this way is called experience sampling. In a 2015 review, Jonathan Smallwood and Jonathan Schooler noted that mind-wandering is a conscious experience that can only be verified by self-report, so studies need to be backed by measures that do not rest on what people say. The four studies below cover how often it happens and how it relates to mood, a cost on the road, a possible use in creativity and the split between drifting on purpose and drifting by accident.
In a large phone study, minds wandered in nearly half of the reports, and people were less happy when they did
In 2010, Matthew Killingsworth and Daniel Gilbert at Harvard built an iPhone web application that contacted volunteers at random moments in their waking hours. Each time it asked how they felt, what they were doing and whether they were thinking about something other than what they were doing. The answers were no, or yes with something pleasant, neutral or unpleasant. Their analysis used 2,250 adults, with an average age of 34, who gave an average of 7.9 reports each.
Minds wandered in 46.9% of the reports and in at least 30% of the reports taken during every activity except making love. People were less happy when their minds were wandering than when they were not, during all activities. When people wandered to pleasant topics, they were no happier than when they stayed on what they were doing. When they wandered to neutral or unpleasant topics, they were unhappier. The authors also compared each report with the reports before and after it. Wandering in the earlier report went with lower happiness in the later one, and wandering in the later report did not go with earlier happiness. They took this to suggest that wandering more often caused unhappiness than followed from it, and said unhappiness could also lead to wandering.
Doesn’t show The volunteers signed up on a happiness-tracking website, so they are not a random sample of people, and almost three quarters lived in the United States. Everything is self-report, and mind-wandering rested on a single question. The before-and-after comparison cannot rule out something else driving both moods and wandering. A 2013 week-long smartphone study led by Giulia Poerio found that sadness tended to come before mind-wandering, and that mind-wandering did not predict later mood unless its content was negative. So the claim that a wandering mind is an unhappy mind is contested, and it may run in both directions.
Among 955 injured drivers, intense mind-wandering before a crash went with a higher chance of being the responsible driver
In 2012, Cédric Galéra and colleagues in France studied 955 drivers who came to the adult emergency department of a university hospital after a motor vehicle crash, between April 2010 and August 2011. Using a responsibility case-control design, they compared 453 drivers thought to be responsible for their crash with 502 who were not. Besides mind-wandering, they recorded external distraction, negative mood, alcohol, psychotropic drugs and lack of sleep.
Intense mind-wandering, meaning content that was highly disrupting or distracting, was reported by 17% of the responsible drivers (78 of 453) and 9% of the others (43 of 502). After adjusting for sociodemographic and crash characteristics, the odds ratio was 2.12, with a 95% confidence interval of 1.37 to 3.28. An odds ratio of about two means the odds of being responsible were roughly twice as high with intense wandering.
Doesn’t show An association measured after the fact. Drivers were asked in hospital what had been on their minds just before the crash, so the answers depend on memory and may be shaped by what happened. Only injured drivers who reached the emergency department were included. The finding concerns intense mind-wandering only, so it says little about light drifting at the wheel.
A break with an undemanding task raised scores on a creativity test, though later studies found mixed results
In 2012, Benjamin Baird, Jonathan Smallwood, Jonathan Schooler and colleagues tested the idea that mind-wandering helps creative incubation, which is the notion that stepping away from a problem helps with it later. They recruited 145 undergraduates, ages 19 to 32, 110 of them women, for course credit. Everyone first did a standard test of creative problem solving, the Unusual Uses Task. After a 12-minute break they did it again, on problems they had seen before and on new ones.
Three groups spent the break on a demanding task, an undemanding task that needed only infrequent responses, or rest. A fourth group had no break. On the problems they had already seen, the undemanding-task group improved more in how unique their answers were than any other group. There was no difference on new problems. The undemanding group also reported more mind-wandering afterward than the demanding group, and the authors read this as support for the idea.
Doesn’t show One laboratory study of students, and the benefit appeared only on problems seen before. Mind-wandering was measured by a questionnaire after the break, and the authors note they did not measure other differences between people, chiefly inhibition, that could account for the link. A 2022 study in PLOS ONE by Teng and Lien, with 90 participants, found that a group doing a mind-wandering-prone task did not outperform a no-break control on the same kind of creativity test. A 2025 preregistered writing study by McDaniel and colleagues found no differences in creative improvement across break types, though among people who got the same prompt again, those who wandered more during the break improved more. The case that wandering aids creativity is mixed.
A review argued that minds wander on purpose as well as by accident, and that the two behave differently
In 2016, Paul Seli, Evan Risko, Daniel Smilek and Daniel Schacter reviewed studies in which people were asked whether their mind-wandering was intentional. In these studies, the usual thought probe was changed to offer three answers: on the task, wandering on purpose, or wandering without meaning to. In two sets of lab experiments, 34% to 41% of the mind-wandering people reported was intentional, though other studies found less. In a study of students across a semester of lectures, they reported mind-wandering about 34% of the time, and slightly more than half of it was intentional.
The reviewers described several differences. People reported more intentional wandering in an easy task and more unintentional wandering in a hard one. Higher motivation to do well on a task went with less intentional wandering. In studies of differences between people, more unintentional wandering went with more symptoms of attention-deficit/hyperactivity disorder and obsessive-compulsive disorder, and intentional wandering showed no such link. The authors argued that studies lumping the two together may hide these differences.
Doesn’t show A review by researchers who work on this distinction, drawing mostly on student volunteers doing lab tasks. The authors say it is unclear what informs a person's report of intention, since intention may shift during one episode, and that brain imaging studies have not yet separated the two types. Their proposal for different underlying mechanisms is described as speculative.
Try it: where the attention went
Think of one stretch of a routine task today when you noticed your attention had been elsewhere. Write three short notes.
- What I was doing, and where my mind had gone, in a few plain words
- Whether I sent it there or found myself there, as best I can tell
- What the drift cost the task or gave it, if anything, and how I felt on noticing
The notes follow the same questions the research asks: where attention was, whether the trip was chosen and what came of it. Three notes cannot say how often it happens or how it relates to mood. The studies needed many reports from many people for that.
What is mind-wandering in psychology?
Attention moving from the task at hand to our own thoughts, such as memories, plans or imagined events. Researchers also call it task-unrelated thought or stimulus-independent thought. A 2015 review by Jonathan Smallwood and Jonathan Schooler describes it as attention switching from a current task to unrelated thoughts and feelings. Researchers define it in somewhat different ways, and a 2018 paper by Paul Seli and colleagues proposes treating it as a family of related experiences.
How often does the mind wander?
In the 2010 phone study of 2,250 adults, minds wandered in 46.9% of reports, and in at least 30% of the reports during every activity except making love. That rate was higher than researchers typically see in laboratory experiments. In a study of students during lectures across a semester, mind-wandering was reported about 34% of the time. The figures depend on the question asked, the task and the people.
Why does my mind wander?
The research describes it as attention turning inward and loosening its hold on the senses, with content drawn from memory and feeling, and with executive control helping to regulate it. In one lab study, a harder task brought more unintended wandering and an easier one more wandering on purpose. In the 2010 phone study, what people were doing explained little of whether their minds wandered. The studies on this page do not pin down one cause.
Is mind-wandering bad?
The studies find costs in some settings. Among 955 injured drivers, intense mind-wandering went with roughly twice the odds of being the responsible driver. Possible uses are less settled: a 2012 study found a creativity benefit after an undemanding break, and later studies found mixed results. Whether wandering makes people unhappy is also argued, since one large study suggested it did and a smaller smartphone study found sadness tended to come first.
What is the difference between mind-wandering and daydreaming?
Researchers often use the two terms interchangeably. A 2024 online study by Hagar Shimoni and Vadim Axelrod asked people to judge short descriptions of someone's thoughts. Planning, worrying and ruminating while doing another task were judged more like mind-wandering. Recalling past events and fantasizing with no other task were judged more like daydreaming. The authors concluded the terms might not be fully equivalent.
Can mind-wandering be reduced?
One small trial suggests it can. In 2013, Michael Mrazek and colleagues randomly assigned 48 undergraduates to a two-week mindfulness class or a nutrition class. The mindfulness group showed less mind-wandering during a reading test and a working memory test. The sample was small, the training lasted two weeks and the participants were students, so the finding is a lead.
Where the idea comes from
Lab research on spontaneous thought goes back at least to the 1960s. A 1966 paper by John Antrobus, Jerome Singer and Stanley Greenberg has a title that describes experiments to enhance and suppress spontaneous cognitive processes. In 1989, a lab study by Leonard Giambra measured what he called task-unrelated thought. In a 1995 paper, Giambra noted that such thoughts may occupy awareness because they capture attention or because a person deliberately shifts to them. A 2016 review by Paul Seli and colleagues took up that early split as the divide between intentional and unintentional mind-wandering.
In 2006, Jonathan Smallwood and Jonathan Schooler published a review called The Restless Mind in Psychological Bulletin. It argued that mind-wandering could be fitted into models of executive attention, as a goal-driven process aimed away from the main task. In 2015, the same two authors published a review in the Annual Review of Psychology that summarized the field.
In 2007, Malia Mason and colleagues used thought sampling together with brain imaging and reported that mind-wandering went with activity in a default network, a group of brain regions that are active when the brain is at rest. That network is now usually called the default mode network and has its own page here. A scan can show that a network is busy while people report wandering. It cannot show that the network produces the experience.
The name is contested. A 2018 paper by Paul Seli and colleagues points out that earlier definitions of mind-wandering differ in important ways, and proposes treating it as a family of related experiences. A 2016 paper by Kalina Christoff and colleagues instead describes it as one member of a family of spontaneous thought that includes creative thought and dreaming.
The question it adds
When we find that attention has left what we were doing, this idea asks about the trip, as well as the task.
Where did my attention go, did I send it there, and what did the task gain or lose while it was away?
Antrobus, Singer and Greenberg (1966), Giambra (1989), Smallwood and Schooler (2006), Mason and colleagues (2007), Killingsworth and Gilbert (2010)
Questions to carry
- When did my mind last leave what I was doing, where did it go, and did I send it there or find myself there?
- Which tasks hold my attention easily, and which ones let it slip away, and what is different about them?
Related
daydreaming, zoning out, zoned out, spaced out, my mind drifts, can't focus on reading, lost in thought, mind keeps wandering, distracted by my own thoughts, read the same page twice, head in the clouds, attention drifts, thinking about something else
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