Researchers aren't even sure whether it should be considered a disorder.

PSYCHOLOGY
Other highly-ranked words included "tit," “booby,” “hooter,” “nitwit,” and "twit."
A new study finds that paying to save time makes people happy.
Warning: We cropped most of the holes from the honeycomb image, but the story contains a photo of a dried lotus seed pod.
Most of us "underestimate the importance of just walking to the store, taking the stairs, cleaning the house, or carrying the kids."
Quick, low-pressure art projects activate the brain’s reward center.
Researchers are studying whether technology use is connected to depression, anxiety, and other issues.
Everyone knows yawning is contagious. What this study presupposes is … maybe it isn’t?
A new study finds that people find attractive scientists more interesting, but less capable and credible.