![]() ![]() ![]() This is why, according to one study, psychopaths aren't as susceptible to contagious yawning. In 1974, farmers in China's Shaanxi province accidentally unearthed one of the biggest archaeological finds of the 20th century the life-size terracotta army of Emperor Qin Shi Huang (259 B.C. Heavy artillery was brought out and dozens of rounds were fired, but the flying object was never hit and never fell to the ground. "Copying the facial expressions of others helps us to adopt and understand their current state," said Matthew Campbell of Yerkes National Primate Research Center at Emory University. When night fell over Los Angeles on the 24 th of February 1942, the alarms suddenly began to sound off as an unidentified object hovered over the city. One evening another accident occurred but this time the driver survived. All of the accidents were fatal and seemingly unexplained as there was nothing particularly strange about that part of the road. Researchers have also observed that chimpanzees can "catch" yawns from humans. In the 1920s a spate of accidents plagued a lonely road crossing Dartmoor in Devon. A 2005 study published in Cognitive Brain Research found that the networks in your brain responsible for empathy and social skills are activated when you see someone yawn. What's more, scientists aren't entirely sure why it's contagious among social animals, such as humans. Recently, the scientific community has moved toward the idea that yawning is a thermoregulatory behavior that cools down the brain, but its true biological function is still unclear. Yawning is something you likely do every day, but, oddly enough, scientists still aren't sure why. ![]() Some scientists believe yawning is a display of empathy. Account icon An icon in the shape of a person's head and shoulders. Over the last three months, s global ranking has decreased from 183,450 to 210,336. ![]()
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