Scientific American 60-second Science

2018.11.10 Babies And Chimps Share A Laugh


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baby's laugh is unmistakable: <> But aside from its squealing, high-pitched quality, there's another factor that sets a baby's laugh apart from ours: babies laugh on the exhale AND on the inhale. Whereas adult humans "tend to laugh predominantly on the exhale. The classic kind of ha-ha-ha." Disa Sauter, a psychologist who studies emotions at the University of Amsterdam. 

宝宝的笑是明白无误的:“CLIP:宝宝笑声”但除了尖锐,高音质外,还有另一个因素让宝宝的笑声与我们分开:婴儿在呼气和吸气时笑。成年人“倾向于主要在呼气时笑。经典的ha-ha-ha。” Disa Sauter,一位在阿姆斯特丹大学学习情绪的心理学家。

Sauter and her colleagues collected 44 samples of babies laughing, from the ages of 3 months… <> to 10 months… <> all the way up to 18 months. <> 

索特和她的同事收集了44个婴儿笑样,从3个月开始......“CLIP:3个月”到10个月......“CLIP:10个月>>一直到18个月。 << CLIP:18个月>>

They played the samples for about 100 untrained volunteers, and asked them to deconstruct the laughs. Were the babies laughing on the inhale, the exhale, or both? "And there we find a nice relationship between the age of the baby and the amount of the laughter happening on the inhale." 

他们为约100名未经训练的志愿者演奏样本,并要求他们解构笑声。婴儿是否在吸气,呼气或两者都笑? “在那里,我们发现婴儿的年龄与吸气时发生的笑声之间存在很好的关系。”

The younger the baby, the more laughs on the inhale. Because remember, our laughs gravitate towards the exhale as we age. And Sauter thinks one reason for that could be that we gain more vocal control as we learn to talk: speaking also happens primarily on the exhale.

宝宝越年轻,吸气就越笑。因为记住,随着年龄的增长,我们的笑声会倾向于呼气。而索特认为,其中一个原因可能是我们在学会说话时获得了更多的声音控制:说话也主要发生在呼气上。

She presented the preliminary findings at a meeting of the Acoustical Society of America, in Victoria, Canada. [Disa Sauter et al, How do babies laugh?] The researchers are in the process of checking the judgments of the volunteers against those of professional phoneticians. 

她在加拿大维多利亚州的美国声学学会会议上介绍了初步调查结果。 [Disa Sauter等人,婴儿如何笑?]研究人员正在检查志愿者对专业语音人员的判断。

As it happens: human babies aren't the only primates who laugh both breathing our and breathing in. <> Chimps do it too.

碰巧:人类婴儿不是唯一一个笑着呼吸我们呼吸的灵长类动物。<< CLIP:黑猩猩>>黑猩猩也这样做。

"They laugh like hoo hoo hoo. They laugh more continuously while inhaling and exhaling. It's totally difficult to do on purpose." 

“他们像hoo hoo hoo一样笑。他们在吸气和呼气时不停地笑。这是故意的。”

But Sauter, I thought, pulled off a pretty good impression. "I'll take that as a compliment! "

但是,我想,索特给人的印象非常好。 “我会把它作为一种恭维!<笑>”

—Christopher Intagliata 

[The above text is a transcript of this podcast.]

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