A new study showed that laughter is a better indicator in determining friendships than even speech. Volunteers were able to pinpoint groups of friends versus strangers by listening to their laughter.

Humans may be the only species that appreciates jokes, but we inherited the response—laughter—from our closest relatives. Meet researchers who are tickling baby chimps, bonobos, and gorillas to record ...

For many years psychologists and behavioral biologists agreed that laughter was a unique emotional expression found only in humans. However, as the study of animal emotions expanded this idea was ...

A cackle and a giggle can mean different things. Scientists say there are two types of laughter: the kind that comes from pure glee, and the kind that's meant to send a social message. New research ...

When I was little, I tended to fall into bouts of uncontrollable laughter. Basically, once I started laughing, I found it very difficult to stop. The problem was particularly acute in contexts where I ...

Laughter is one of the best ways to heal and feel happy. It has special healing powers unlike anything else and when we are feeling down, a good laugh can bring our spirits back up. Laughter also has ...

"My whole family starts giggling together, and it's like some form of happy laughing therapy," she says Benjamin VanHoose is a Staff Editor on the Movies team at PEOPLE. He has written about ...