Best of #econtwitter - Week of October 5, 2025: paper summaries
Welcome readers old and new to this week’s edition of the Best of Econtwitter newsletter. Please submit suggestions — very much including your own work! — over email or on Twitter @just_economics.
Idiosyncratic favorites
^🫡 to all the fallen soldiers out there
^oldheads might remember the econoblogosphere brouhaha in 2013-4 around this, Sumner trouncing Krugman et al
^:
Based on the published supplementary materials and additional necessary replication code provided by one of the DEU authors, we have identified that these results were obtained using sample restrictions that are not stated in the article or its online appendix, that excluded an additional 27% of the observations
...
We apply the methodology of DEU ... to the “full” data sample without the unstated restrictions
...
Second, unlike the results in DEU, which are robust to the exclusion of individual sectors, in the full sample, the increase in markups at the end of the sample is driven almost entirely by a single sector: Finance and Insurance (F&I).4 When the F&I sector is excluded from the full sample, the average markup increases only modestly, from just below 1.30 in the mid-1980s to about 1.35 in 2016
More paper summaries
