(2017·龙岩市质量检测)Yawning is so contagious ( 具有传染性的) that chimpanzees can “catch” it from cartoons, according to research.

　　Scientists from Emory University in Atlanta，US, have discovered that a cartoon of a yawning chimp will stimulate (刺激) real chimps to yawn. They describe in the Royal Society journal，Proceedings B，how this could assist in the future study of empathy (同感，共鸣)．The work could also help explain if and how computer games might cause children to imitate what they see on screen.

　　Previous studies have already shown contagious yawning in chimpanzees — stimulated by video­recorded footage of yawns.

　　“We wanted to expand on that，”explained Matthew Campbell，a researcher from Emory University's Yerkes National Primate Research Center and lead author of the study.“We're interested in using cartoons for presenting stimuli to animals, because we can control all the features of what we show them，” he continued.

　　Although Dr.Campbell doesn't think the chimps were “fooled” by the cartoons into thinking they were looking at real chimps, he

　　explained

　　that

　　there

　　was

　　evidence

　　that

　　chimpanzees “process animated (动画的) faces the same way they process photographs of faces”．

　　He said, “It's not a real chimpanzee，but it kind of looks like a chimpanzee, and they respond to that.”

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