来自《耶鲁大学开放课程：心理学导论 第15集》

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  But we know this, in particular,
  我们通过一系列
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  from a series of studies that would be unethical if they were to be done today.
  研究所得 这些研究现在进行可能会被认为是不道德的
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  In these studies, they put a chimpanzee in a room and there's a lever.
  在这些研究中 他们把黑猩猩放在一间有杠杆的房间
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  And when the chimpanzee slaps the lever, it gets some food.
  当黑猩猩拍打杠杆时 它就能获得食物
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  Trivial, smart animal, piece of cake.
  对这么聪明的动物是很简单的
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  But the room has a window leading to another room.
  房间里有看得见另一间房间的窗户
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  And in the other room another chimpanzee is placed.
  在另一间房间里有另一只黑猩猩
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  This second chimpanzee is not a relative of the first chimpanzee
  第二只黑猩猩不是第一只的亲属
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  and they've never seen each other before.
  他们从来没有见过
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  Now, when the first chimpanzee hits the lever
  现在 当第一只黑猩猩拍打杠杆时
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  the second chimpanzee gets a painful electric shock,
  第二只黑猩猩就会受到痛苦的电击
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  putting the first chimpanzee in a horrible dilemma.
  这让第一只黑猩猩陷入一个恐怖的困境