Why You Forget What You Walked Into a Room For: The Doorway Effect

Updated 25 October 2026: we added 2024 to 2026 research, including two new virtual reality doorway studies, evidence that event boundaries can also strengthen memory, and a section on ageing. Reviewed by Brooke Hilland, Senior Content Editor. Read what’s new

You walk into the kitchen with total purpose, stop in the middle of the floor, and have no idea why you came. You retrace your steps, sometimes literally, back to the sofa, where the reason instantly comes back to you. Almost everyone has done it, and almost everyone blames age, tiredness or a bad night’s sleep.

Psychologists have a more interesting suspect: the doorway. A series of experiments suggests that walking from one room into another can make it harder to remember what you were doing a moment ago. The newer research adds an important twist, though. The doorway effect is real under some conditions, but it is not the memory-wiping force that the headlines made it sound.

The experiments that started it

The idea comes from Gabriel Radvansky, a cognitive psychologist at the University of Notre Dame. In a set of studies published in 2011 in the Quarterly Journal of Experimental Psychology, he and his colleagues asked students to carry out a simple, repetitive task. They walked through a series of rooms, picked up an object from one table, carried it to the next, put it down and picked up something else.

Every so often, a word appeared on the screen and participants had to say whether it was the object they were carrying or the one they had just put down. Some of the time, they had just walked through a doorway into a new room. Other times, they had walked the same distance without leaving the room.

Memory was worse after passing through a doorway. The effect showed up in a virtual environment on a computer screen and, in a follow-up, in real rooms in a lab, where people carried objects hidden in boxes.

Why would a doorway matter?

Radvansky’s explanation draws on what psychologists call event models. Our minds do not record life as one continuous stream. They chop it into chunks, or events, and doorways are natural boundaries between them. Crossing one tells the brain that a new episode has begun, and the details of the previous one are, in Radvansky’s words, filed away.

Filing is useful. It keeps the brain from being cluttered with every detail of every room you have been in today. The cost is that the reason you got up off the sofa may have been filed with the sofa.

One of the original experiments added a neat test. If forgetting were simply about being in a different place from where you formed the memory, then walking back to the original room should bring it back. It did not reliably help, which suggested the boundary itself, rather than the location, was doing the damage.

What happened when others put it to the test

As with many striking findings, later researchers wanted to know how far it held up. In a 2021 study in BMC Psychology, Jessica McFadyen, Oliver Baumann and colleagues ran four experiments, using immersive virtual reality, passive video and real-world walking.

Across their experiments, they found no general effect of doorways on forgetting. But one condition stood out. When participants were also holding other information in mind, a kind of mental multitasking, walking through a doorway did make their memory more vulnerable. They were more likely to falsely recognise things they had not seen.

That fits everyday experience surprisingly well. You rarely forget why you walked into the kitchen when you are calm and focused on a single thing. It tends to happen when you are juggling the shopping list, a message you need to reply to and the pan on the stove.

So is it the doorway or the multitasking?

Probably both, in combination. The current evidence suggests that event boundaries such as doorways can disrupt memory, but mainly when your working memory is already stretched. A doorway alone is unlikely to wipe your mind. A doorway plus a busy head makes the familiar blank moment much more likely.

This is also a good reason not to read too much into the experience. Forgetting why you entered a room is common at every age and is not, on its own, a sign that anything is wrong with your memory. If you are worried about memory changes that are new, frequent or affecting daily life, that is worth discussing with a doctor.

What the newest virtual reality studies found

The 2021 McFadyen study left the doorway effect looking fragile. Two virtual reality experiments published since then suggest it has not gone away, but they also make the picture messier, in a useful way.

In January 2026, Julie Lamont and David Bilkey at the University of Otago in New Zealand published a study in Memory & Cognition in which 90 adults, aged 18 to 63, wore a headset and wandered through a five-room virtual building, handling objects as they went. Afterwards they were asked when they had met each object and where it had been.

One group simply explored. In that group the classic pattern showed up: people were better at judging the order of two objects when both had been in the same room than when a doorway separated them. In the authors’ words, “a doorway effect was evident in the control, no-distractor condition”.

The interesting part is what happened to everyone else. Other groups were interrupted by a short task, either a visuospatial working memory puzzle or a simple reaction-time test, delivered at a doorway or in the middle of a room. The reaction-time task did little. The visuospatial puzzle, though, hurt memory for objects only when it landed mid-room. The authors’ reading is that it chopped one room into two separate events in memory. When the same puzzle came at a doorway, its effect overlapped with the boundary that was already there rather than piling on top of it.

That matters for the doorway-or-multitasking question above. A demanding mental task seems capable of creating a boundary all by itself, with no door in sight. Walking into the kitchen while mentally rearranging tomorrow’s diary may split your experience just as neatly as the door frame does.

A smaller study, published in npj Science of Learning in May 2025, separated two kinds of boundary that a doorway usually bundles together. Yue Li, Mikael Johansson and Andrey Nikolaev put 26 young adults (average age 25.5) in a virtual shop, where they played a salesperson fetching 150 objects for a stream of customers. Sometimes the next object came from a different booth (a change of place). Sometimes it was for a different customer (a change of goal).

When later asked which of two objects had come first, participants were right 68.4% of the time on average. Switching customers made those judgements less accurate. Moving between booths did not affect accuracy at all, but it did make people less confident in their answers.

Put simply, a change of purpose did more damage than a change of scenery. That fits the everyday experience surprisingly well. You rarely forget why you went upstairs because of the stairs. You forget because, somewhere on the way, your mind moved on to a new job. The sample was small, all young and healthy, and the task was a lab game, so it is a pointer rather than a verdict.

The other side: boundaries that help you remember

Most coverage of the doorway effect, including the early headlines, treats event boundaries as memory’s enemy. The wider research on event segmentation, much of it led by Jeffrey Zacks and colleagues at Washington University in St. Louis, tells a more balanced story. The brain carves continuous experience into chunks, and the moments where one chunk ends and another begins are often remembered better, not worse.

A 2026 study from Saarland University in Germany tested this with spoken stories. Doruntinë Zogaj, Regine Bader and Axel Mecklinger had 40 young adults listen to short five-sentence narratives while their brain activity was recorded with EEG. At a key word, the story either carried on with the same activity or switched the main character to a new goal (a character who has just borrowed library books goes on to read them, or goes shopping instead).

In a surprise memory test afterwards, words that marked a change of goal were recognised slightly better than words that continued the same thread, and the advantage was clearest when people were highly confident. The brain recordings showed a distinct response at boundary words, and only at boundaries did that response predict which words would later be remembered. The authors describe boundaries as “cognitive anchor points”.

The behavioural gain was modest (an effect size of about a third of a standard deviation), and the hints that boundaries also strengthened memory for the words just before them were weak. Still, it sits neatly beside the doorway findings. A boundary appears to seal off the event you have just left, which makes details from it harder to reach once you are inside the new one. At the same moment, the boundary itself becomes a well-marked point that is easier to find later.

So the doorway is less a memory eraser than a filing clerk. It closes one folder and opens another. If your intention was left in the old folder, it is harder to get at. If it is pinned to the change itself, it may stick better.

Does age change how boundaries work?

A common follow-up question is whether the “why did I come in here?” moment gets more frequent as we get older. The research does not answer that directly, but a 2024 study gives a partial clue about how event boundaries and age interact.

Maverick Smith, Jeffrey Zacks and colleagues published the work in Psychology and Aging. Adults aged 20 to 79 watched films of actors doing ordinary things while trying to remember them. Half the participants were also asked to press a button whenever they felt one small unit of activity ended and another began. Memory was tested a week later in one experiment and a month later in another.

• Young adults who marked the boundaries recalled more than those who simply tried to remember, at both delays.
• Middle-aged adults gained after a week, but the benefit had faded by a month.
• Adults over 70 showed no benefit from the exercise.
• Younger and older adults largely agreed on where the boundaries fell, and across all ages, people whose boundaries matched the group’s more closely remembered more, up to a month later.

The authors’ interpretation is that older adults segment events about as sensibly as younger ones, but have more trouble holding on to, or getting back to, those well-organised memories after a delay. That is a point about long-term memory for films, not about forgetting your purpose seconds after crossing a hallway, so it should not be stretched too far.

It does suggest one practical idea for younger and middle-aged readers: paying deliberate attention to where one part of your day ends and the next begins seems to help you remember it. That ties in with how a busy, unbroken day can blur together, a theme we explore in our piece on why time seems to speed up with age. And if the real culprit is a mind juggling several things at once, our look at the multitasking myth explains why switching between tasks costs more than it feels like it does.

How to stop forgetting what you came in for

Because the effect seems strongest when your mind is crowded, the most useful tricks reduce the load or carry the intention across the boundary with you.

• Say it out loud. Muttering “scissors, scissors” on the way to the drawer keeps the goal active in working memory.
• Picture it. Imagining yourself picking up the item creates a stronger memory than the bare intention.
• Carry a cue. Taking the empty glass with you to refill it, or holding the letter you need to post, makes the reason hard to lose.
• Finish one thing first. If you are halfway through a message, finish it before you get up. Fewer open loops means more room for the one you are acting on.
• Go back. It is not foolish. Returning to the spot where you formed the intention often brings it back, even if the research is mixed on why.

Unfinished tasks tend to tug at us in their own way, as we explore in our piece on the Zeigarnik effect. And if a blank moment in front of other people makes you cringe for the rest of the day, you are probably experiencing the spotlight effect as well.

Frequently asked questions

More in our Psychology section.

Official links and research

• Radvansky, G. A., Krawietz, S. A., & Tamplin, A. K. (2011). Walking through doorways causes forgetting: Further explorations. Quarterly Journal of Experimental Psychology, 64(8), 1632–1645. University of Notre Dame summary
• Pettijohn, K. A., & Radvansky, G. A. (2016). Walking through doorways causes forgetting: Event structure or updating disruption? Quarterly Journal of Experimental Psychology. doi.org/10.1080/17470218.2015.1101478
• McFadyen, J., Nolan, C., Pinocy, E., Buteri, D., & Baumann, O. (2021). Doorways do not always cause forgetting: A multimodal investigation. BMC Psychology, 9, 41. UCL Discovery
• Lamont, J. C., & Bilkey, D. K. (2026). The effect of spatial boundaries on memory in a virtual environment. Memory & Cognition. DOI
• Li, Y., Johansson, M., & Nikolaev, A. R. (2025). Hierarchical event segmentation of episodic memory in virtual reality. npj Science of Learning, 10, 25. DOI
• Zogaj, D., Bader, R., & Mecklinger, A. (2026). How the brain segments experience: ERP evidence of event boundaries enhancing memory formation in narratives. Cognitive, Affective, & Behavioral Neuroscience, 26(3), 885–902. DOI
• Smith, M. E., Hall, C. S., Membreno, R., Quintero, D., & Zacks, J. M. (2024). Attention to event segmentation improves memory in young adults: A lifespan study. Psychology and Aging, 39(7), 750–769. DOI

How we reported this. We went back to the original research for this story, three sources in all, listed above, and checked every figure against them. If you think we have got something wrong, tell us and we will look at it. Read more about how we work.

Cover photo: Clay Banks on Unsplash. Charts and graphics: Something Navy.