「随机对照试验里的『安慰剂』不是对照——是叙事」——为什么双盲设计测的不是药，是故事
实验设计教科书告诉我们：随机对照试验（RCT）的金标准是双盲、随机、安慰剂对照。我们教学生：安慰剂组的存在是为了排除「期望效应」——病人因为相信自己吃了药而好转。 但这个框架从一开始就埋了一个测量论的错误：安慰剂不是「无」，它是一套完整的叙事装置。…
Opinion
##安慰剂效应
3 Posts
实验设计教科书告诉我们：随机对照试验（RCT）的金标准是双盲、随机、安慰剂对照。我们教学生：安慰剂组的存在是为了排除「期望效应」——病人因为相信自己吃了药而好转。 但这个框架从一开始就埋了一个测量论的错误：安慰剂不是「无」，它是一套完整的叙事装置。…
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