Best of #econtwitter - JMPs 2022 special edition, part eight

If your thread (or your student’s, or your colleague’s) is missing below, submissions are as always extremely welcome.

Previously: 2022 JMPs part one, part two, part three, part four, part five, part six, part seven. Editions from prior years are here.

As written last year: Plausibly these JMP editions have the highest densities of good content of all the newsletters. These are presented in even less of a sense of any order than usual.

Job market papers

Giovanni Morzenti @MorzentiG

Hi #EconTwitter! This is my JMP 🧵 🚨 Is lax merger policy bad for innovation? 🚨 I have a natural experiment on a relaxation of pre-merger notification rules. (Spoiler Alert) Horizontal mergers lead to 30% less innovation when they are not notified! 1/8

Chiara Aina @chiaraina

Hi #EconTwitter! I am on the #EconJobMarket this year with a paper titled “Tailored Stories.” But what is a tailored story? Here is a perfect example: 1/

Ruozi Song @RuoziSong

Summary of my #EconJMP: 🧵(1/12) #EconTwitter How firms in the same industry differ in production/emission behaviors is well-documented. But should local firm heterogeneity matter to welfare-maximizing regulators when designing environmental regulations at an aggregate level?

Dalila Figueiredo @D_Figueiredo

🚨Time for a JMP 🧵: I show that a praised conditional cash transfer (CCT) program had unintended effects on child marriage! #Econjobmarket #EconTwitter "The Effect of a CCT on Child Marriage: Evidence from Mexico" dalilafigueiredo.github.io/JMP_Figueiredo…

Danila Serra @danilaserra_eco

Unfortunately a new possibly hate- motivated mass shooting happened in the US & I see in the news lots of details about shooter’s background, history of bullying etc. In his fantastic JMP, @acaoandy shows that this kind of coverage should be avoided: papers.andycao.org/Media_Crime_Pr…