Marco Iacoboni, a lab director at the UCLA Brain Mapping Center, says when people see a smile, so-called mirror neurons fire in their brain and evoke a similar neural response as if they were smiling themselves.
To put this differently, when most people see a skier huck a 100 foot cliff, all they see is the cliff.
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"That's when you see people, when they go for a walk, they're being pulled by their dog, or when they open the door, just to answer the doorbell, the dog gets to the door first, " he explained.
And as Richard Hofstadter wrote at one point, that fear is natural in American discourse when people - or is a natural expression in American discourse when people see something threatening their social position or their social situation.
When you see people suffering in a case like this, it's almost impossible not to think of your own house, your own neighborhood.
If she did, it could have been for a very valid reason, such as concerns about the weather or acoustics, or maybe nerves -- even superstars must get a little nervous when they see a crowd of close to a million people.
One runs a risk when separating groups of people out of the general population, and I see this when I publish a book or curate an exhibit on women.
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"It's a real humbling experience to be driving into Wimbledon and to actually have a hit out there, when you see people living there for days to hopefully get in and see a little bit of tennis, " he said.
When you speak to Mac people you see a loyal following that in my opinion will keep using the products of Apple.
As occurred in Spain, people know a good handout when they see one and, just last month, there were over 15, 000 new installations.
But we all see a benefit when fewer people grow up in poverty and fewer families have to turn to welfare to get by.
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Sometimes I give speeches to newly sworn citizens in Miami, and when I see thousands of people ecstatic to be a part of this remarkable, albeit imperfect, nation, I still believe it can all work, but we need true citizens who comprehend the rights and responsibilities that title entails, who understand how they got here and why.
When people act against their self-interest I see a flashing neon sign: Interesting Psychology Here!
"Some people get excited when they see I'm a former Olympian, " he admits.
The group designed the Rain Room to push visitors outside their comfort zone and see how people would react when faced with a different outcome to an all too familiar situation.
And again, at a time when we see people in the Middle East and North Africa in particular reaching for those democratic values, it underscores that the things that we believe in are not just relevant but essential to the development of greater prosperity and security and democracy for peoples around the world.
Especially when times are tough, people look carefully to see whether a leader is generous in these ways.
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People feel more comfortable when they come in and they see a lawyer sitting in court that looks like them, that talks like them.
When people cannot find a primary-care physician who will see them in a reasonable length of time, all too often they go to hospital emergency rooms.
"The city has gone through a lot when you see all the people who've had to relocate and move all their things, " Memphis point guard Mike Conley said.
When my mother died back in 1993, the best way to alert the community was to get the local newspaper to run a news item people would see when they scanned the morning headlines.
Think about that when you see pictures of people lined up for gas or groceries after a disaster.
"I see people are clever and resourceful when they realized there is a major global problem, " he said.
You see, when searching for a job, many people get anxious.
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The news feed is the first, and sometimes only, page people see when they log on to the Facebook website or fire up a Facebook mobile app.
We see a sharp drop off around the age of 35 when people become more established.
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When people are not seeking out a service category, they may not even see or hear it.
See, when it comes to the people Barack meets, he has a memory like a steel trap.
But people are people, and some take risks or cut corners, especially when they see a possibility of making greater profits.
So imagine the shock when you see plenty of white males and only a relative handful of people who look like you.
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