Tariffs, trade, and their effects on the US past and present.
Associate Editor at the JEP (@AEAJournals).
@NCState_ARE / @NCStatePoole
Nov 7 • 6 tweets • 2 min read
Lots on the effects of tariffs these days, but many public datasets or naiive approaches to measurement may set you up for endogeneity problems you probably haven't thought about: mismeasurement leads to biases and can even flip the sign of estimated coefficients. 🧵👇
Nearly all public datasets (eg
WITS) report tariffs as: Duties/Imports ( ie Ad Valorem Equivalent tariffs, AVE)
We usually think 👇AVE = liberalization,
but AVE depends not just on law, but also choices about aggregation and prices which are endogenous to most economic outcomes
Jun 27, 2023 • 4 tweets • 2 min read
🚨Big news!🚨
NSF Grant supporting the ongoing construction of a product level import and tariff database spanning the ENTIRE HISTORY of the US. Joint with @lyd_cox , @cmicmeissner, John Lopresti, @straiberman, Martin Rotemberg, and Alan Klein.
#EconTwitter #tradepolicy
What can you do with data like this?
You can evaluate the regressivity of the tariff code (tinyurl.com/5e7ncb32)! You can evaluate trade induced structural change in the US (tinyurl.com/2n3u6tzh)!
You can study the effects of the GATT (tinyurl.com/3zatufaj)!
