Asked in Yawning
Why do people yawn when they see someone else yawn?
June 24, 2012 12:51PM
Edit: Another possible scientific reason as to why we do this:
1. Person observes yawn
2. Sensory input of the brain deactivates left periamygdalar region
3. Subject yawns in response.
It is mainly social empathy in which causes this reaction to viewing another's yawn.
Also: When you see someone else yawn, it's because their brain thinks they are low on oxygen so they open up and yawn to get more. Then, your brain thinks that person is stealing your oxygen and sealing it off from you, so your brains reaction is to yawn and the chain goes on and on and on...
Hope this helped.