now a study of mobile phone calls has attempted to test prof dunbar's hypothesis about our russian doll-like shells of emotional intimacy, providing insight into how we stratify our social connections.

you've probably heard of dunbar's number which suggests that human beings can only maintain meaningful relationships with between 100 to 230 other people, and that number is typically 150.

你可能听说过邓巴数，它指出人只能与其他100~230个人维持有意义的人际关系，而且这个数字通常是150。

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dunbar had been looking at the social group size and the brain size of different primates, and found that primate species with larger neocortices had grooming relationships with larger social groups.

当时邓巴对不同的灵长类动物的社群规模和脑部大小进行了比对研究，发现新皮层更大的灵长类物种在更大的社群内相互梳理毛发。

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turns out that the clusters shape up rather similarly to dunbar's suggestions, with 4.1 in the first layer, 6.9 in the next, then 18.8, and finally 99.1.

结果发现，这串数据发展成邓巴观点，更确切的说，与邓巴观点相似，4.1在第一层，6.9在下一层，然后再下一层是18.8，最后一层是99.1。

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professor dunbar, a leading evolutionary psychologist, said touch helps maintain relationships by triggering the release of endorphins, the feel-good brain chemicals usually associated with exercise.

顶尖进化心理学家邓巴教授称，人们在触碰时会促使内啡肽分泌，可产生愉悦情绪，有助于维系人际关系。内啡肽这种物质通常与运动有关。

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speaking at the british science festival in birmingham, professor dunbar said: "this was a surprise for us. we hadn't expected it."

在伯明翰举行的英国科学节上，邓巴说：“研究结果令人意外，我们从未料想过。”

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what fascinates dunbar today is not simply that magic 150 number, but the question of how humans have evolved to enable this optimum group to bond.

如今，让邓巴感兴趣的不只是这个神奇的数字150，而是下列问题：人类走过了怎样的进化道路，才使这个最佳群体得以保持紧密联系？

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shirley griffith: professor dunbar tested volunteers to see how their bodies reacted to funny things, and to some nice, but not necessarily funny things.

邓巴教授通过测试一些志愿者们了解他们对一些趣事和对一些未必有趣的好事各自的身体反应。

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speaking at the british science festival in birmingham, professor dunbar said: this was a surprise for us. we hadn't expected it.

在伯明翰举行的英国科学节上，邓巴说：研究结果令人意外，我们从未料想过。

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dunbar believes that humans have evolved to create more efficient ways of bonding, such as dancing, storytelling and shared laughter.

邓巴认为，人类在进化过程中创造了更高效率的亲近方式，例如跳舞、讲故事以及一起大笑。

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but dunbar is one of a growing band of so-called evolutionary psychologists who are starting to take this blended approach.

但越来越多的所谓进化心理学家开始采取这种混合方法，邓巴就是其中之一。

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when he returned from england, dunbar took a job as an assistant librarian at the library of congress.

当他从英格兰回到美国时，邓巴在国会图书管理查找一个助理馆员的工作。

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shirley griffith: professor dunbar also believes that laughter was important for our early ancestors thousands of years ago.

邓巴教授还认为，在几千年以前，笑对于我们早期的祖先们是非常重要的。

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dunbar's team used an internet-based questionnaire to quiz 428 women and 112 men about their relationships.

邓巴的团队通过网上发起问卷，调查了428位女性和112位男性的个人关系。

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but even though she lost the iowa primary, dunbar now has jackie sharp in her corner.

尽管她失去了艾奥瓦州的初选，邓巴还是获得了杰姬·夏普的支持。

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nearly every human culture in history exhibits this complex sense of longing, dr dunbar observes.

据邓巴观察，从古至今，几乎每个时期的人类文明都显示出了这种渴望爱情的复杂情感。

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she asked about bill dunbar.

她已经都问了比尔邓巴了

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what did dunbar say to you?

邓巴对你说了些什么？

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dunbar says getting back to her online critics is just good business sense.

邓巴说回到她的在线评论家只是良好的商业意识。

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dunbar read his poems to audiences in the united states and in england.

邓巴在美国与英国各地公开朗诵他的诗作。

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but dunbar thinks there is a more important evolutionary twist at work.

但邓巴认为，这其中有一种更为重要的进化因素在起作用。

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