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Nov 22
Why we forget things midway
If you forget what you were going to do, or get, or find, after entering a room, then blame your doorways. University of Notre Dame Psychology Professor Gabriel Radvansky has suggested 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 explained.

kid"Recalling the decision or activity that was made in a different room is difficult because it has been compartmentalized," she stated.

Conducting three experiments in both real and virtual environments, Radvansky's subjects - all college students - 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.

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

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