From uncomfortable family portraits to forced workplace smiles, our brains often sense something’s off before we can explain ...

Fake or polite smiles, on the other hand, usually involve only the mouth muscles. The eyes remain wide or indifferent, and ...

Fake or polite smiles, on the other hand, usually involve only the mouth muscles. The eyes remain wide or indifferent, and ...

The eyes remain wide or indifferent, and the smile appears more mechanical than meaningful – a kind of emotional camouflage. Both real and fake smiles depend on cranial nerve VII, also known as ...

What makes a smile feel sincere or fake is due to a surprising blend of facial anatomy, neurology and emotional authenticity ...

The eyes remain wide or indifferent, and the smile appears more mechanical than meaningful – a kind of emotional camouflage. Both real and fake smiles depend on cranial nerve VII, also known as ...

In human society, there are many occasions when we have to smile as a matter of courtesy, even if we are not genuinely enjoying or amused. Michelle Speer, a professor of anatomy at the University ...