Perché entrare in una stanza fa dimenticare che cosa si stava facendo?

Un’esperienza che abbiamo fatto tutti: entrare in una stanza e accorgerci che abbiamo dimenticato che cosa ci accingevamo a fare, o a dire, o a prendere.

Secondo uno studio di psicologia sperimentale, si tratterebbe di un fenomeno reale.

Walking through doorways causes forgetting, new research shows | KurzweilAI

We’ve all experienced it: The frustration of entering a room and forgetting what we were going to do. Or get. Or find.

New research from University of Notre Dame Psychology Professor Gabriel Radvansky suggests that passing through doorways is the cause of these memory lapses. “Entering or exiting through a doorway serves as an ‘event boundary’ in the mind, which separates episodes of activity and files them away,” Radvansky explains.

“Recalling the decision or activity that was made in a different room is difficult because it has been compartmentalized.”

Conducting three experiments in both real and virtual environments, Radvansky’s subjects performed memory tasks while crossing a room and while exiting a doorway.

In the first experiment, subjects used a virtual environment and moved from one room to another, selecting an object on a table and exchanging it for an object at a different table. They did the same thing while simply moving across a room but not crossing through a doorway.

Radvansky found that the subjects forgot more after walking through a doorway compared to moving the same distance across a room, suggesting that the doorway or “event boundary” impedes one’s ability to retrieve thoughts or decisions made in a different room.

Another experiment was designed to test whether doorways actually served as event boundaries or if one’s ability to remember is linked to the environment in which a decision — in this case, the selection of an object — was created. Previous research has shown that environmental factors affect memory and that information learned in one environment is retrieved better when the retrieval occurs in the same context.

Subjects in this leg of the study passed through several doorways, leading back to the room in which they started. The results showed no improvements in memory, suggesting that the act of passing through a doorway serves as a way the mind files away memories.

The study was published recently in the Quarterly Journal of Experimental Psychology.

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