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科学美国人60秒:害羞的鱼类更喜欢追随同样胆小的鱼

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This is Scientific American — 60-Second Science. I'm Karen Hopkin.
Got a minute?
When you think of a leader, you may think of an individual who is above all bold. But a new study of fish called sticklebacks shows that shy individuals actually prefer to follow fish that are similarly timid.
Researchers had trios of sticklebacks with known personalities play follow the leader. The fish were placed in a tank that had some plastic plants at one end and some food hidden at the other. In some of the groups, a bold fish and a shy fish acted as leaders, while another shy fish followed. And in other groups, it was a bold fish that did the following. The researchers recorded whether the follower sallied forth more frequently with the fish that was behaviorally similar or the one that was different.
What they found is that shy fish were more likely to emerge from under cover when an equally wary fellow was already out there. Bold follower fish did not seem to care which leader they followed.

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Of course, no matter which fish a stickleback chose to stick with, the bold fish did lead more expeditions over the course of the experiment than their more retiring friends. That’s because the bold fish initiated more trips, regardless of who might be tailing them. The findings are in the journal Biology Letters.
The researchers write that "when offered a choice of leaders, sticklebacks prefer to follow individuals whose personality matches their own, but bolder individuals may, nevertheless, be able to impose their leadership, even among shy followers, simply through greater effort." We may soon see if such tendencies also hold true in humans, when Americans decide who they’ll follow in November. Unless, of course, something fishy happens.
Thanks for listening for Scientific American — 60-Second Science. I’m Karen Hopkin.

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重点单词   查看全部解释    
desperate ['despərit]

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adj. 绝望的,不顾一切的

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bold [bəuld]

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adj. 大胆的,粗体的,醒目的,无礼的,陡峭的

 
retiring [ri'taiəriŋ]

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adj. 腼腆的,隐居的,不喜社交的 动词retire的

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permanently ['pə:mənəntli]

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adv. 永久地

 
impose [im'pəuz]

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v. 加上,课征,强迫,征收(税款)

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nevertheless [.nevəðə'les]

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adv. 仍然,不过
conj. 然而,不过

 
wary ['wɛəri]

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adj. 小心的,机警的

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stick [stik]

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n. 枝,杆,手杖
vt. 插于,刺入,竖起<

 
tank [tæŋk]

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n. 坦克,箱,罐,槽,贮水池
vt. 把 .

 
timid ['timid]

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adj. 胆怯的,害羞的

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