来自《耶鲁大学开放课程：心理学导论 第20集 第20集》

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  causes anxiety.
  这么说会引起焦虑
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  In other studies the control
  其它实验中
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  group doesn't know they are the control group.
  对照组不知道自己是对照组
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  So sometimes you can do an intervention where you say,
  所以有时你可以做干扰
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  "Congratulations, everybody in Intro Psych
  说 "恭喜各位心理学导论课上
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  who did very low on the depression inventory,"
  抑郁清单得分低的同学"
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  which many of you filled out,
  这个你们许多人都填了这个清单
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  "We're going to do something to you."
  "我们要带你们做点什么"
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  And then the rest of the people don't even know
  这样其余的人甚至不知道
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  that they haven't been chosen.
  他们没被选上
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  So, you're right. It's a perfectly good point.
  所以你说得对 这个观点很好
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  Knowing you're not chosen could have a deleterious effect
  得知自己落选会产生负面影响