采访计量经济学家 Pedro Sant’Anna(对解决双重差分异质性处理效应问题有很大贡献)
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He is as many of you know one of the half dozen important young econometricians that have made major contributions to the difference-in-differences research design. His productivity is intense so I can’t name them all, but the two I know best, almost by heart, are:
Callaway and Sant’Anna (2021), “Difference-in-differences with multiple time periods” Journal of Econometrics
Sant’Anna and Zhou (2020), “Doubly-robust difference-in-differences estimators”, Journal of Econometrics
The first one has over 2000 cites and it was only published a little over a year ago. He also has an Econometrica with Jon Roth on issues related to functional form and parallel trends in diff-in-diff and a review article (also with Jon Roth, but also with John Poe and Alyssa Bilinski) for anyone who wants to in one stop learn everything you need to know about diff-in-diff.