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Potential weights and implicit causal designs in linear regression

Jiafeng Chen

arXiv 30 Jul 2024 · Econometrics

arXiv:2407.21119 · PDF · DOI · OpenAlex · Extracted main text

Abstract

When we interpret linear regression as estimating causal effects justified by quasi-experimental treatment variation, what do we mean? This paper characterizes the necessary implications when linear regressions are interpreted causally. A minimal requirement for causal interpretation is that the regression estimates some contrast of individual potential outcomes under the true treatment assignment process. This requirement implies linear restrictions on the true distribution of treatment. Solving these linear restrictions leads to a set of implicit designs. Implicit designs are plausible candidates for the true design if the regression were to be causal. The implicit designs serve as a framework that unifies and extends existing theoretical results across starkly distinct settings (including multiple treatment, panel, and instrumental variables). They lead to new theoretical insights for widely used but less understood specifications.

Citation extraction

59
references
185
in-text mentions
59
distinct cited
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16,983
main-text words

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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Blakeslee, David and Fishman, Ram and Srinivasan, Veena (2020) Way down in the hole: Adaptation to long-term water loss in rural India1.000143100%
2Cervellati, Matteo and Gulino, Giorgio and Roberti, Paolo (2024) Random Votes to Parties and Policies in Coalition Governments1.000113100%
3Joshua D. Angrist (1998) Estimating the Labor Market Impact of Voluntary Military Service Using Social Security Data on Military Applicants1.00093100%
4Lin, Winston (2013) Agnostic notes on regression adjustments to experimental data: Reexamining Freedman’s critique0.9416383%
5Athey, Susan and Imbens, Guido W (2022) Design-based analysis in difference-in-differences settings with staggered adoption0.9098475%
6Kline, Patrick (2011) Oaxaca-Blinder as a reweighting estimator0.87452100%
7Słoczyński, Tymon (2024) When should we (not) interpret linear iv estimands as late?0.87452100%
8Blandhol, Christine and Bonney, John and Mogstad, Magne and Torgovit… (2025) When is TSLS actually late?0.86723665%
9Goldsmith-Pinkham, Paul and Hull, Peter and Kolesár, Michal (2024) Contamination bias in linear regressions0.84310460%
10Bruns-Smith, David and Dukes, Oliver and Feller, Avi and Ogburn, Eli… (2025) Augmented balancing weights as linear regression0.81142100%

Showing the top 10 of 59 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
1Nonparametric Treatment Effect Identification in School Choice0.40511
2Covariate Balancing and the Equivalence of Weighting and Doubly Robust Estimators of Average Treatment Effects0.40511
3Quantifying the Internal Validity of Weighted Estimands0.40511
4Nonlinearity in Dynamic Causal Effects: Making the Bad into the Good, and the Good into the Great?0.40511
5The purpose of an estimator is what it does: Misspecification, estimands, and over-identification0.40511