Facial expressions not learned
I'm surprised though that nobody did this years ago, it seems like an obvious way to find out.
The facial expressions we make to show or hide our emotions are hardwired into our brains rather than learned during life, a study has concluded.
Blind and sighted athletes made the same expressions when they won and lost, US researchers found.
This, the study reported in the Journal of Personality and Social Psychology study suggests, meant the expressions were not picked up by watching others.