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Quasi-Experimental Shift-Share Research Designs
Open accessAbstract
Many studies use shift-share (or “Bartik”) instruments, which average a set of shocks with exposure share weights. We provide a new econometric framework for shift-share instrumental variable (SSIV) regressions in which identification follows from the quasi-random assignment of shocks, while exposure shares are allowed to be endogenous. The framework is motivated by an equivalence result: the orthogonality between a shift-share instrument and an unobserved residual can be represented as the orthogonality between the underlying shocks and a shock-level unobservable. SSIV regression coefficients can similarly be obtained from an equivalent shock-level regression, motivating shock-level conditions for their consistency. We discuss and illustrate several practical insights of this framework in the setting of Autor et al. (2013), estimating the effect of Chinese import competition on manufacturing employment across U.S. commuting zones.
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Metadata
- Authors
- Borusyak, K., Hull, P., & Jaravel, X.
- Affiliations
- University College London and CEPR
- National Bureau of Economic Research (US)
- Centre for Economic Policy Research (GB)
- Corresponding author
- Jaravel, Xavier
- ORCID
- Jaravel, Xavier
- Venue
- The Review of Economic Studies
- Publisher
- Oxford University Press (OUP)
- Published
- 2021-06-08
- Volume
- 89
- Issue
- 1
- Pages
- 181-213
- ISSN
- 0034-6527 (ISSN-L)
- 1467-937X
- PMC
- PMC10289799
- OpenAlex
- W2807611776
- Cited by
- 1,427
- References
- 43
- Citations by year
- 2026: 376 · 2025: 271 · 2024: 233 · 2023: 198 · 2022: 125 · 2021: 101
- FWCI
- 44.61
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
- Locations
- The Review of Economic Studies (publishedVersion)
- National Bureau of Economic Research (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- London School of Economics and Political Science Research Online (London School of Economics and Political Science) (acceptedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- arXiv (Cornell University) (submittedVersion)
- London School of Economics and Political Science Theses Online (London School of Economics and Political Science) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Economic and Social Research Council (ES/T014431/1, ES/V009478/1)
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (P2CHD041020)
- Topics
- Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Spatial and Panel Data Analysis
- Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Regional Economic Trends and Sectoral Structure
- Keywords
- shift-share instrument, Bartik instrument, Chinese import competition, manufacturing employment
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