Why Most People Catch Contagious Yawns, But Psychopaths Don’t

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We’ve all been there – someone near us lets out a big old yawn and, no matter how hard we screw up our faces and try to resist the inevitable, within moments we’re yawning too.

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You’ve probably wondered why yawning is so contagious, especially since it seems to happen even if you’re not tired, and a new study has finally shed some light on the issue.

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Psychology Today shared the fascinating piece of research, and the answer to the age old question also reveals why people defined as ‘psychopaths’ don’t experience the same phenomenon.

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The study revealed that empathy is one of the key factors which leads to people catching yawns.

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Given that one of the primary personality traits of psychopaths is a lack of empathy, it stands to reason that people defined as such would be impervious to following their peers’ yawning lead.

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The study comes courtesy of researchers at Baylor University, who had 135 subjects take a test called the ‘Psychopathic Personality Inventory-Revised’ (PPI-R), before putting them through a contagious yawn experiment, which sounds amazing.

The results showed that the ‘cold-heartedness’ part of the psychology scale was significantly related to whether the person yawned – if they were more cold-hearted, they were less likely to catch a yawn.

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So, basically, if you start yawning and your partner or friend doesn’t follow suit, you might want to have a quick think about how well you know them!