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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  basically drawing upon the law of effect,
  应用效果律
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  is reinforce the pig for doing good things.
  强化这头猪做出的令你满意的行为
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  Suppose you want the pig to walk forward.
  假设你想让这头猪向前走
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  So, you reinforce the pig for walking forward
  那你就对这头猪向前走的行为给予强化
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  and you punish the pig for walking backward.
  如果它向后退 你就惩罚它
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  And if you do that over the fullness of time,
  如果你长时间的这么做
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  your reinforcement and punishment
  你的强化和惩罚
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  will give rise to a pig who walks forward.
  就会使这头猪形成向前走的行为
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  There's two--One technical distinction
  心理学导论的考试中
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  that people love to put on Intro Psych exams
  会经常考到一个术语上的区别
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  is that the difference between positive reinforcement
  即正强化
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  and negative reinforcement.
  与负强化之间的区别