来自《耶鲁大学开放课程：心理学导论 第17集 第17集》

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  can affect your behavior in all sorts of subtle ways. Here is one example.
  可以通过各种微妙的方式影响着你的行为 这里有个例子
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  What they do is they do an experiment where somebody is in trouble.
  他们做了一个实验 实验中某人遇到困难
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  You hear a scream from outside either from a black person or a white person.
  你听到外面传来尖叫声 或是黑人或是白人发出的
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  In one condition you're the only person around.
  一种情况下是你单独一人
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  In another condition there's other people around you.
  另一种情况是你身边还有其他人
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  Now, we know from the work in the Bystander effect
  我们知道旁观者效应
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  that in general which one are we more likely to help in,
  通常哪种情况下我们更会去帮助他人
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  when we're the only person or multiple? "Only," Exactly.
  是我们一个人的时候 还是一群人呢 "一个人" 正确
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  And in fact, when it's the only person just
  事实上 当只有一个人的时候
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  about everybody helps regardless of the color of the person in trouble
  每个人都会不顾受困者的肤色而伸出援手
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  but when you're with other people there's a big difference.
  一旦你身边还有其他人时情况就大大不同
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  Now, again this isn't-- these things are not done with members of the KKK.
  强调一下这不是 这实验的被试可不是三K党成员