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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  It's important.
  这很重要
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  This is very different from classical conditioning
  这与经典条件作用非常不同
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  and one way to see how this is different
  两者间不同的一点在于
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  is for classical conditioning
  在经典条件作用中
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  you don't do anything.
  你的行为是不自主的
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  You could literally be strapped down and be immobile
  你可能真的是被捆绑着 动弹不得
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  and these connections are what you appreciate
  你喜欢这些联系
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  and you make connections in your mind.
  然后在你的脑海里建立起这些联系
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  Instrumental conditioning is voluntary.
  工具性条件作用则是有机体的自发行为
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  You choose to do things
  你自主选择要做的事情
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  and by dint of your choices,
  根据你选择的结果
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  some choices become more learned than others.
  某些选择会变得更容易被采纳