Best of #econtwitter - Week of April 17, 2022 [2/4]
Welcome readers old and new to this week’s edition of Best of Econtwitter. Thanks to those sharing suggestions, over email or on Twitter @just_economics.
This is part two of four.
Paper summary threads
![Twitter avatar for @khoslasaksham](https://substackcdn.com/image/twitter_name/w_96/khoslasaksham.jpg)
Can mobile phones save lives?
New research shows that a 10 percentage point increase in mobile coverage across Africa was linked to a 0.45 percentage point decrease in infant mortality, driven by an increase in health knowledge and healthcare utilisation.
![Image](https://substackcdn.com/image/fetch/w_600,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fpbs.substack.com%2Fmedia%2FFQdcxxjXMAAwuMG.png)
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![Twitter avatar for @albrgr](https://substackcdn.com/image/twitter_name/w_96/albrgr.jpg)
These RCTs on cell phone access find unbelievably huge income effects:
ora.ox.ac.uk/objects/uuid:2…
jblumenstock.com/files/papers/j…
![Image](https://substackcdn.com/image/fetch/w_600,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fpbs.substack.com%2Fmedia%2FFQZu71kVEAAFNKS.png)
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![Twitter avatar for @gcmccord](https://substackcdn.com/image/twitter_name/w_96/gcmccord.jpg)
(1/12) Delighted to share new paper co-authored with @EconBluhm, exploring small scale relationship between economic activity and #nightlights. Many studies implicitly assume linear relationship, unlikely at small geographies (image shows US counties) mdpi.com/2072-4292/14/5…
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![Twitter avatar for @FernandoSaltiel](https://substackcdn.com/image/twitter_name/w_96/FernandoSaltiel.jpg)
Glad our paper with @surzua_chile and @KaplanEthan is out in the AEJ!
Does voting in important elections early in life affect long-term turnout?
Turning 18 before the 1988 Plebiscite led to higher electoral turnout by 6-10% in 2013-2017 v. those who turned 18 right after.
![Image](https://substackcdn.com/image/fetch/w_600,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fpbs.substack.com%2Fmedia%2FFQU79JFWYBEGGP1.jpg)
![Twitter avatar for @AEAjournals](https://substackcdn.com/image/twitter_name/w_40/AEAjournals.jpg)
AEA Journals @AEAjournals
![Twitter avatar for @mariatitova](https://substackcdn.com/image/twitter_name/w_96/mariatitova.jpg)
Have (or love) an applied Bayesian persuasion paper but hate the full commitment assumption? I’ve got great news for you: you don’t need it —
1/🧵 (link: maria-titova.com/papers/PVI-tit…)

![Image](https://substackcdn.com/image/fetch/w_600,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fpbs.substack.com%2Fmedia%2FFQEbazTaAAI1hO4.jpg)
![Twitter avatar for @M_Giorcelli](https://substackcdn.com/image/twitter_name/w_96/M_Giorcelli.jpg)
Thanks @dkedrosky for a great summary of my work on the long-term effects of management training in Italy under the Marshall Plan. Firms whose managers visited US plants had a gain in productivity that lasted for at least 15 years after the intervention.
![Twitter avatar for @dkedrosky](https://substackcdn.com/image/twitter_name/w_40/dkedrosky.jpg)
Davis Kedrosky @dkedrosky
Interesting discussions
![Twitter avatar for @ChloeNEast](https://substackcdn.com/image/twitter_name/w_96/ChloeNEast.jpg)
Very proud of this visual guide I created to explain different scenarios & associated problems based on the DiD literature, so thought I’d share here in case it’s helpful!
![Image](https://substackcdn.com/image/fetch/w_600,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fpbs.substack.com%2Fmedia%2FFQKve4gXwBQF46Q.jpg)
![Twitter avatar for @ChloeNEast](https://substackcdn.com/image/twitter_name/w_40/ChloeNEast.jpg)
Dr. Chloe N. East (she/her) @ChloeNEast
![Twitter avatar for @josh_t_dean](https://substackcdn.com/image/twitter_name/w_96/josh_t_dean.jpg)
Correlational/Causal claim Turing test: If you're not willing to flip the order of your "association" (e.g. Heart Attacks predict consuming avocados), you're making an implicitly casual claim and should either knock it off or be up front about it.
![Twitter avatar for @Austan_Goolsbee](https://substackcdn.com/image/twitter_name/w_96/Austan_Goolsbee.jpg)
Or is it the other way around?? https://t.co/bLOHO3Uw7G
![Twitter avatar for @Econ_4_Everyone](https://substackcdn.com/image/twitter_name/w_40/Econ_4_Everyone.jpg)
John List @Econ_4_Everyone
![Twitter avatar for @nickchk](https://substackcdn.com/image/twitter_name/w_96/nickchk.jpg)
The concept of businesses that make very little money from their main draw and instead profit from an associated good is not, like, an economics mystery, but it's so common now that it should probably be a principles of micro standard. I talk about it in my class. Do you?