V2EX regression discontinuity

Regression Discontinuity

Definition / 释义

“回归不连续(设计)”:一种用于因果推断的准实验方法。当处理(政策、项目资格等)由某个阈值/切点(cutoff)决定时,通过比较阈值两侧非常接近的个体/样本的结果差异,来估计处理效应。(也常写作 Regression Discontinuity Design, RDD

Pronunciation (IPA) / 发音(IPA)

/rrn dskntnuti/

Examples / 例句

The researchers used regression discontinuity to estimate the effect of scholarships.
研究者使用回归不连续(设计)来估计奖学金的影响。

Because funding is assigned only to schools above a test-score cutoff, a regression discontinuity design can identify the causal impact of the program near that threshold.
由于经费只发放给考试分数超过某个阈值的学校,回归不连续设计可以在阈值附近识别该项目的因果影响。

Etymology / 词源

Regression 源自拉丁语 regredi(“返回、回到”),在统计学中发展为“回归分析”的术语;discontinuity 由前缀 **dis-**(“不、否定”)+ strong>continuity(“连续性”)构成,表示“非连续/出现跳跃”。合起来指在回归框架下利用阈值处的“跳跃(不连续)”来进行因果识别的方法。

Related Words / 相关词

Notable Works / 名作与经典文献中的用例

  • Imbens, G. W. & Lemieux, T. (2008). Regression discontinuity designs: A guide to practice. Journal of Econometrics
  • Lee, D. S. & Lemieux, T. (2010). Regression Discontinuity Designs in Economics. Journal of Economic Literature
  • Angrist, J. D. & Pischke, J.-S. (2009). Mostly Harmless Econometrics(常以RDD作为关键识别策略之一进行讲解)
  • Morgan, S. L. & Winship, C. (2015). Counterfactuals and Causal Inference(涵盖RDD等准实验方法)
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