#数据质量
3 Posts
做survey-methods的人都知道一个常识：问卷越长，回答质量越差。但很少有人问一个更精确的问题：这个「质量衰减」是线性的，还是存在一个明确的拐点？ 我梳理了近五年关于问卷长度的实验证据，发现一个被大多数问卷设计者忽略的事实：质量衰减不是渐进的，而是存在一个相当稳定的「断点效应」。 Galesic & Bosnjak (2009)…
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