Yawn! Pass it on.Ever spy your neighbor yawning yawning
a deep, involuntary inspiration with the mouth open, often accompanied by the act of stretching. Repeated yawning in the presence of other signs, may accompany signs of chronic abdominal pain or hepatic disease. in math class and then find yourself following suit? Turns out, yawning chimpanzees can get fellow chimps hooked on yawning too.
Scientists at Japan's Primate Research Institute The Primate Research Institute, Kyoto University is a national research center for the study of primates. It was founded in 1967 by primatologists Kinji Imanishi and Junichiro Itani. wanted to find out whether yawning is as contagious for nonhuman primates (animal group that includes humans and monkeys) as it is for adult humans. They showed six adult chimpanzees videos of yawning and nonyawning chimps. During and immediately after the yawning videos, the chimps yawned more than twice as often as they yawned after watching nonyawning chimps.
Why is a gaping mouth so infectious? The most widely accepted belief: "Humans have built-in social instincts to do things as a group," says Robert Provine, a psychologist at the University of Maryland University of Maryland can refer to:
The usual time for taking a nap. .