Perry E. Metzger(@perrymetzger):“To conclude, modern diff-in-diff methods yield the same old answer: minimum wages reduce jobs. The opposite finding in CDLZ and DL is the consequence of discretionary, narrow, and unsound researcher choices that favor that result.” In even less kind words: if you torture the data long enough, you can extract a false confession.

2026.06.17 23:13

“To conclude, modern diff-in-diff methods yield the same old answer: minimum wages reduce jobs. The opposite finding in CDLZ and DL is the consequence of discretionary, narrow, and unsound researcher choices that favor that result.” In even less kind words: if you torture the data long enough, you can extract a false confession.

Antonio Rodriguez@4ntonioR

2026.06.15 13:12

What do diff-in-diff event-study designs really tell us about the employment effects of min wages? My new paper with @NeumarkEcon tackles this using the stacked design of Cengiz-@arindube-@attilalindner-@benzipperer and the related LP-DiD design in Dube-Lindner’s HLE chapter. 🧵

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