Memory · 60 s
Why you forget things in doorways
The doorway ate your thought.
You’d think. It’s stress, or age. In 2011, a psychology lab at Notre Dame blamed the door itself.
Actually. People forgot more after a doorway than after the same walk inside one room. The researchers think a door closes one episode in your brain.
The twist. In a 2021 VR rebuild, doors did nothing for 29 people. For 45 others who also counted backwards, the mistakes showed up.
How sure? Less robust than its fame suggests. All samples are small, and the 2021 team only found it under heavy mental load.
Sources
- Walking through doorways causes forgetting (2011), Notre Dame
- McFadyen et al. (2021), BMC Psychology
What the video says
You walk into the kitchen, stop, and have no idea why you came.
You'd probably blame stress, or age. In 2011, a psychology lab at Notre Dame blamed the door itself.
Students carried objects between tables, on screen and in real rooms. After stepping through a doorway, they forgot more than after walking the same distance in one room.
The researchers think your brain stores life in episodes. A doorway marks the end of one, so the plan you made in the living room gets filed away with the living room.
In 2021, a team in Australia rebuilt it in virtual reality. For twenty-nine people, the doors did nothing. When forty-five others had to count backwards at the same time, the mistakes showed up.
So the door mostly trips up a brain that's already juggling. Walking and texting? That's the juggling.
Which is why you're back in the kitchen, holding a spoon, for no reason.