The doorway effect: why you forget why you walked into a room
Short answer: Forgetting why you walked into a room is called the doorway effect: the brain files memories by scene, and a doorway acts like a scene break. It happens to everyone, and it often gets more frequent in perimenopause, when estrogen swings, broken sleep and a heavy load put pressure on working memory.
You get up from your desk with a clear reason. You walk into the kitchen. And at the doorway, it is gone. You stand there, look at the counter, and walk back to your desk, where you remember it immediately.
This happens to everyone sometimes. If it has started happening to you several times a day in your forties, there is a good reason for that too.
The doorway effect is real
Psychologists have a name for it: the doorway effect. In a series of experiments at the University of Notre Dame, people who walked through a doorway forgot what they were carrying or what they had planned more often than people who walked the same distance in a single room. (Radvansky, Krawietz and Tamplin, Quarterly Journal of Experimental Psychology, 2011)
The explanation is that the brain organises memory into episodes. A doorway works like a scene break in a film. Your brain files away the old room, opens a new episode, and the intention you were holding stays behind in the old one. That is why walking back to where you started so often brings it back.
Why it gets worse in perimenopause
Holding an intention in mind for a few seconds while you do something else is working memory. It is one of the abilities most sensitive to the changes of perimenopause:
- Estrogen swings. Estrogen works in the brain regions that carry memory. In perimenopause it rises and falls unevenly for years rather than declining smoothly.
- Broken sleep. Night sweats and early waking leave less capacity the next day for holding things in mind.
- Load. These are often the years of the biggest job, teenagers, and parents who need more help. The more you are tracking, the easier one item slips at the doorway.
Up to 60 percent of women in the menopause transition report memory or concentration problems, and the large majority still test in the normal range. (International Menopause Society, 2022) It is a common, usually temporary, part of the transition.
Tricks that beat the doorway
- Say it out loud as you stand up. "Scissors." Speaking it gives the intention a second route into memory.
- Carry a cue. Take the empty mug, or the letter, or anything linked to the reason you are going.
- Go back to the scene. If it is gone, return to where you had the thought. It usually comes back in seconds.
- Batch trips. Fewer journeys between rooms mean fewer doorways.
- Use one list, in one place, rather than notes on every surface.
When to get it checked
Forgetting why you walked into a room is not a sign of dementia on its own. See your doctor if you are getting lost in places you know well, struggling with tasks you have done for years, or if the people around you are worried. And if there is early onset dementia in your family, mention it whatever your symptoms.
Keep score
"Walking in cold" is one of the five questions in the free 90 Day Word Log. Score it once a week for two minutes, and in a few months you will know whether it is coming and going, easing, or worth taking to your doctor.
Sources: Radvansky, Krawietz and Tamplin, Quarterly Journal of Experimental Psychology, 2011. International Menopause Society white paper on brain fog, 2022. This article is for information and is not medical advice.