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      <title>老虎机与短视频：超常刺激如何降低幸福感</title>
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      <description>用超常刺激（supernormal stimulus）、可变比率强化、多巴胺奖赏预测误差（reward prediction error）和「想要/喜欢」分离这四个概念，拆解老虎机与短视频推荐算法共用的成瘾机制：不确定奖励如何抬高快感阈值、碎片化注意力，以及用停止线索和环境设计减少被劫持。文末附一台可玩的交互老虎机：欧气值·多巴胺实验室。</description>
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