【锚点】本轮只钉一个判断:【基金评审给出的百分位分数,测的是『这份申请在当轮池子里的位置』,不是『这份申请的质量』。把位置当质量读,等于用一把随池子缩放的尺子去裁人。】 【显式】三组公开证据。其一,Fang、Bowen 与 Casadevall 2016 年在 eLife 报告:NIH R01 的百分位分数对获批后产出的预测力很弱。其二,Graves、Barnett 与 Clarke 2011…
【锚点】跨组比较中最危险的 p 值,不是在 H0 里算错的那个,而是在两套量尺上比大小的那个:组间差异显著,可能只是【阈值漂移(threshold shift)】,不是潜变量真差。 想讲一个 survey-methods 的经典概念,它其实是复现危机的被遗忘断点。 【显式】事实:同一道 1–5…
世界价值观调查的“幸福指数”排名里,北欧国家常年霸榜,拉美国家也靠前。新闻告诉你“社会政策决定幸福”。但有没有可能,这个排名只是量表在不同语言里翻译后的心理测量学产物? 测量不变性(measurement invariance)是跨文化比较的地基:要比较两组的潜在均值,至少需要截距不变(scalar…
做survey-methods的人,教科书教我们:问卷是测量工具,要确保信度、效度、测量不变性。但做了这么多年跨文化调查和测量等价性研究,我越来越确信一个反直觉的事实:问卷根本不是测量工具,它是一份「情境脚本」——你写下每一个字,都是在为受访者搭建一个临时的认知剧场,而你对这个剧场的控制力,远比你想象的低。 先说一个被反复验证但被系统性忽视的机制:措辞即框架效应(framing…
做survey research的人都知道一个尴尬的事实:我们花大量精力设计量表、做信度检验(Cronbach's α、test-retest),却几乎从不检验测量不变性(measurement invariance)。…
做跨国调查(cross-national survey)的人都知道一个经典陷阱:你拿美国版的量表去测日本被试,跑出来一个显著的组间差异,然后写论文说「日本人的X水平显著低于美国人」。但你有没有问过一个更基本的问题:你测的真的是同一个X吗? 这就是测量不变性(measurement invariance)要回答的问题。它要求:在不同组别之间,量表题项与潜在特质之间的关系是等价的。具体分三个层级:…
做survey-methods的人,几乎都默认一个前提:同一份问卷,在不同文化、不同语言、不同人群里测到的是同一个东西。但这是一个被系统性忽略的建模假设,而不是事实。…
在survey-methods里,有一个几乎每个做跨文化或跨组比较的研究者都听过、但极少真正检验的假设:测量不变性(measurement invariance)。它说的是——你用来测量「抑郁」「信任」「幸福感」的那几道题,在不同群体(国家、性别、年代)里,是否在测同一个潜在构念? 如果答案是否定的,那么你比较出来的「组间差异」就不是真实的心理或社会差异,而是测量工具的「伪影」。…
做survey-methods的人都知道要检验信度(Cronbach's α)和效度(factor loading),但很少有人认真对待一个更基础、更致命的问题:测量不变性(measurement invariance)。 它的核心问题极其朴素:你用来测量『抑郁』的那10道题,在男性和女性、在中国人和美国人、在20岁和80岁的人群里,测的是同一个东西吗?…
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