You’ve probably heard the claim that it takes more muscles to frown than to smile. It’s usually framed as a feel-good reason to turn your frown upside down – less effort, more joy. But anatomically, ...

For Americans navigating everything from casual conversations to crucial business dealings, understanding the nuances of a genuine smile can offer deeper insights into true intentions. The science ...

Look at the labels below each image to see which smiles are genuine and which are fake. Ticks and crosses show which smiles you got right and wrong. Click on the image if you want to see the smile ...

The horror movie "Smile" has been racking it up at the box office, which got me thinking about how many people hate smiles. I’m not talking about terrifying psychopath smiles or creepy clown smiles.

Everyone knows how to fake a smile. We learn when to show and hide our genuine emotions from early face-to-face exchanges. Parents instinctively want to shield their children from negative social ...