来自《耶鲁大学开放课程：心理学导论 第4集 第4集》

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  You've got to work your way to it.
  你需要去努力地给予引导
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  And the act of working your way to it is known as shaping.
  这种引导的行为被称为行为塑造
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  So, here is how to get a pig to dance.
  下面是让一头猪跳舞的方法
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  You wait for the pig to do something that's halfway close to dancing,
  你等到猪的动作有点像跳舞
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  like stumbling, and you reward it.
  比如它摇摇晃晃的 你就奖励它
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  Then it does something else that's even closer to dancing
  之后 等他的动作更像是跳舞的时候
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  and you reward it.
  你再奖励它
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  And you keep rewarding it
  只要它的动作越来越像跳舞
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  as it gets closer to closer.
  你就不停的去奖励它
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  Here's how to get your child to bring you some beer.
  让你的孩子为你拿啤酒的方法也是这样的
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  You say,
  你对孩子说
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  "Johnny, could you go to the kitchen and get me some beer?"
  "强尼 去厨房帮我拿些啤酒来吧"