把肥胖视为一种疾病“可能会降低人们的自主权，削弱并剥夺人们内在的动力，而这种动力是推动改变的重要因素。”

Labelling obesity as a disease "risks reducing autonomy, disempowering and robbing people of the intrinsic motivation that is such an important enabler of change."

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奖励减少了内在的动力。

Rewards reduce intrinsic motivation.

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这种内在的动力往往具有极强的感染性。

That kind of drive is contagious.

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in marriage and a love relationship, or even in a friendship.

都存在非常复杂的内在动力。

普林斯顿公开课 - 人性课程节选