Clément de Chaisemartin
Professor, Economics department, Sciences Po, J-Pal affiliate
Editorial Board Member, Review of Economic Studies
Editorial Board Member, American Economic Review
Associate Editor, Journal of Business and Economic Statistics
clement.dechaisemartin(at)sciencespo(dot)fr, follow me on Twitter
News:
I am excited to share my ERC team github page, where we currently maintain:
did_multiplegt_dyn (Stata, R), which supersedes did_multiplegt to estimate dynamic treatment effects: did_multiplegt_dyn is much faster and comprehensive than did_multiplegt, try it out!
twowayfeweights (Stata, R).
did_multiplegt (Stata, R).
All our packages are available from SSC and CRAN.
If you wish to inquire about the functionalities of the packages or report bugs/suggestions, feel free to post your question in the Issue section of the repositories hosted in the GitHub page: your questions may help other users.
Working textbook:
Credible Answers to Hard Questions: Differences-in-Differences for Natural Experiments (with Xavier D'Haultfoeuille), under contract with Princeton University Press.
Working papers:
Clustering and External Validity in Randomized Controlled Trials (with Antoine Deeb)
Empirical MSE Minimization to Estimate a Scalar Parameter (with Xavier D'Haultfoeuille)
More Robust Estimators for Instrumental-Variable Panel Designs, With An Application to the Effect of Chinese Imports on US Employment (with Ziteng Lei). Slides.
Difference-in-Differences for Continuous Treatments and Instruments with Stayers (with Xavier D'Haultfoeuille, Félix Pasquier, and Gonzalo Vazquez-Bare). Slides.
Not all Differences-in-differences are Equally Compatible with Outcome-based Selection Models (with Xavier D'Haultfoeuille)
Two-way Fixed Effects and Difference-in-Difference Estimators in Heterogeneous Adoption Designs (with Xavier D'Haultfoeuille)
Estimating treatment-effect heterogeneity across sites in multi-site randomized experiments with imperfect compliance (with Antoine Deeb)
Accepted and Published papers:
Difference-in-Differences Estimators with Continuous Treatments and no Stayers (with Xavier D'Haultfoeuille and Gonzalo Vazquez-Bare). Forthcoming, AEA P&P (not peer reviewed). Replication package.
Difference-in-Differences Estimators of Intertemporal Treatment Effects (with Xavier D'Haultfoeuille). Accepted, ReStat. Slides.
At What Level Should One Cluster Standard Errors in Paired and Small-Strata Experiments? (with Jaime Ramirez-Cuellar). AEJ Applied, 2024.
Two-Way Fixed Effects and Differences-in-Differences with Heterogeneous Treatment Effects: A Survey (with Xavier D'Haultfoeuille). Econometrics Journal, 2023. Replication package.
Two-way Fixed Effects and Differences-in-Differences Estimators with Several Treatments (with Xavier D'Haultfoeuille). Journal of Econometrics, 2023. Replication package.
The direct and spillover effects of a nationwide socio-emotional learning program for disruptive students (with Nicolás Navarrete). Journal of Labor Economics, 2023. Resumen del estudio en español.
BCG vaccination in infancy does not protect against COVID‐19: evidence from a natural experiment in Sweden (with Luc de Chaisemartin). Clinical Infectious Diseases, 2021.
Two-way fixed effects estimators with heterogeneous treatment effects (with Xavier D'Haultfoeuille). American Economic Review, 2020.
Slides. .tex file, if you want to customize slides. Web Appendix. twowayfeweights and did_multiplegt Stata packages available from SSC repository. Blog coverage: The Replication NetworkEstimating the effect of treatments allocated by randomized waiting lists (with Luc Behaghel). Econometrica, 2020. Web appendix. Stata adofile.
Fuzzy Differences-in-Differences with Stata (with Xavier D'Haultfoeuille and Yannick Guyonvarch), The Stata Journal, 2019. Files to replicate the application to Gentzkow et al. (2011). fuzzydid Stata package available from the SSC repository.
Fuzzy Differences-in-Differences (with Xavier D'Haultfoeuille), The Review of Economic Studies, 2018. Supplementary Material, Slides. 2019 Malinvaud prize, awarded by the French Economics Association to a paper published by a French economist below 40.
Tolerating Defiance? Local average treatment effects without monotonicity, Quantitative Economics, 2017. Supplementary material.
Ready for boarding? The effects of a boarding school for disadvantaged students (with Luc Behaghel and Marc Gurgand). AEJ Applied, 2017.
Workplace smoking ban effects on unhappy smokers (with Pierre-Yves Geoffard and Anne-Laurence le Faou). Health Economics, 2011.
Work in progress:
The long-run effects of a boarding school for disadvantaged students (with Marc Gurgand and Luc Behaghel).
Baby Talk? The effects of a language acquisition intervention in nurseries on staff' practices and on children development (with Quentin Daviot, Marc Gurgand, Sophie Kern, and Florent de Bodman).
Older papers (I am no longer working on those papers, but I hope you still enjoy reading them):
Teaching:
Lecture notes for the PhD-level econometrics courses I taught from 2016 to 2021 at UCSB.
Newspapers articles:
Le Monde, 05/07/18: Mesurer l’impact des politiques publiques est un exercice indispensable.
The Guardian, 05/02/15: Does boarding school really help disadvantaged students?
The Conversation, 04/02/15: Send disadvantaged pupils to boarding school and only the brightest thrive.
Le Monde, 14/05/13: L'éducation nationale doit se donner les moyens d'apprendre.
L'Express, 24/05/13: Il faut réduire la taille des classes.
Policy reports:
Lutter contre les inégalités dès la petite enfance : évaluation à grande échelle du programme Parler Bambin (with Quentin Daviot, Marc Gurgand, and Sophie Kern), Note IPP n°72
Inégaux dès le berceau : des SMS pour améliorer les interactions langagières entre parents et enfants de familles défavorisées ? (with Charlotte Combier, Quentin Daviot, Marc Gurgand, and Sophie Kern), Note IPP n°59
Graduating from high school: the effects of a boarding school for disadvantaged students on their secondary education (with Luc Behaghel and Marc Gurgand), J-PAL Europe/IPP – Retour d’expérience n°3
Investissons dans la petite enfance – L’égalité des chances se joue avant la maternelle (with Florent de Bodman, Romain Dugravier, and Marc Gurgand) report for French think tank Terra Nova, 2016 (media coverage: Les Echos, La Croix, France Info)
Les effets de l'internat d'excellence de Sourdun sur les élèves bénéficiaires: résultats d'une expérience contrôlée (with Luc Behaghel, Axelle Charpentier, and Marc Gurgand), report to the French fund for social experiments for youth, 2013.
Social experimentations: a guide to practice, report to the European Commission, 2011.