Spot the Real from the Fake Smiles.

A true smile of happiness, gladness, or joy shows up different than a fake forced smile. We may show a polite grin or "camera smile" at will (Say, "Cheese!"). The heartfelt, real smile is hard to produce on demand. A true smile requires true emotion. Here is what happens in a true smile:

The corners of the mouth curve upward and outward. Also, the outer corners of the eyes crinkle into "crow's-feet". These small lines are made by muscles that can not be consciously controlled. Therefore,a fake smile does not have these lines at the eyes. Technically, this true smile is called a "Duchenne smile" and involves a lot of coordinated muscle actions. The zygomatic major muscle contracts to raise the corners of the mouth and the orbicularis oculi muscle raises the cheeks to form the "crow's feet" at the eyes' outer edges. A fake smile uses only the zygomatic major muscle at the mouth.A true smile lasts a short limited time (up to only 5 seconds) then the face changes to more relaxed. A fake smile is done with different muscles and can stay on the face all day long.A true smile is symmetrical. The muscles on both sides of the face operate equally in a true emotional smile. A fake smile is often greatly more evident on only one side of the face.

To be continued....

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