Word to the wise: Don’t play poker with your dog. He can read your face like a book. A new study shows that man’s best friend is remarkably good at discerning happy expressions from angry ones – even ...

We smile when we're happy. But how does a face strike the proper look to show, say, happy surprise? Or happy disgust, like when you're laughing at a really gross joke? A new report, published Monday ...

Facial expressions are a key asset in our arsenal of communication methods. Without saying a word, we can alert those around us to our emotional state—ranging from elation to sorrow—simply by flexing ...

“While this study doesn’t have direct clinical impact, it supports previous observations that psychostimulants affect brain function in children with ADHD not only when they’re faced with cognitive ...

This article originally appeared on Health. If toothpaste and lipstick commercials are to be believed, a big grin can make you look more attractive, more approachable, and years younger. While the ...

A person’s brain reaction to a happy face is linked to how outgoing they are, new research shows. The discovery might help researchers learn why some people are more extraverted than others. For years ...