Best of #econtwitter - Week of October 17, 2021 [2/2]
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 two, this week. Part one is here.
Paper summary threads
![Twitter avatar for @lucy_sorensen](https://substackcdn.com/image/twitter_name/w_96/lucy_sorensen.jpg)
New @AnnenbergInst working paper posted! edworkingpapers.com/ai21-476
We use a fuzzy RD design with national panel school-level data to ask:
What effect do police in schools (#SROs) have on school environments and student outcomes?
🧵1/n
![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%2FFBh0ZFhXsAArzPs.jpg)
![Twitter avatar for @_amackay](https://substackcdn.com/image/twitter_name/w_96/_amackay.jpg)
New working paper: @HendrikDoepper, @NateHMiller, and @JoelStiebale, and I examine whether product-level markups are increasing over time. We estimate IO-style models with flexible consumer preferences, allowing us to look at potential drivers of change in both supply and demand.
![Twitter avatar for @AndreasKostol](https://substackcdn.com/image/twitter_name/w_96/AndreasKostol.jpg)
“Labor Supply Responses to Learning the Tax and Benefit Schedule” has been in my care for six years. It has found a new home in AER’s Nov issue. The idea was born in 2014: What % of labor supply mistakes can be explained by people lacking information about their incentives? 🧵1/8
![Twitter avatar for @NickTimiraos](https://substackcdn.com/image/twitter_name/w_96/NickTimiraos.jpg)
The complexity of the language in FOMC statements at the end of Bernanke's tenure required a reading grade level of 20 to 21, equal to a doctoral degree level of education
It has averaged between grades 16-17 thus far under Powell, equivalent to a BA or MA federalreserve.gov/econres/notes/…
![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%2FFBhbhftX0AELf-Z.jpg)
![Twitter avatar for @JPubEcon](https://substackcdn.com/image/twitter_name/w_96/JPubEcon.jpg)
Within a precinct, individuals who move to blocks where people vote more themselves vote more, by 0.5% for every 10% block-turnout difference. Findings based on 12 million voters / 1 million movers in Mexico.
![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%2FFBmodayXoAASVhs.png)
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![Twitter avatar for @levi_boxell](https://substackcdn.com/image/twitter_name/w_96/levi_boxell.jpg)
Using more than 1 million images scraped from news websites, I apply machine learning tools to detect the faces of politicians and measure the emotions expressed on their faces.
I find:
![Twitter avatar for @Jill_Jord](https://substackcdn.com/image/twitter_name/w_96/Jill_Jord.jpg)
My paper w/Maryam Kouchaki, “Virtuous Victims”, is out today in @ScienceAdvances!
We show that people often see victims of wrongdoing as morally virtuous—not because of anything that they have done, but simply because others have mistreated them.
science.org/doi/10.1126/sc…
🧵👇
![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%2FFBmR061VgAM19Qt.jpg)
![Twitter avatar for @bennett_econ](https://substackcdn.com/image/twitter_name/w_96/bennett_econ.jpg)
We study the impact of offering repeated HIV testing (every 4 months for 2+ years) to women + partners in rural Malawi. Testing increases dramatically and people perceive their partners as safer. Three key findings:
![Twitter avatar for @florianederer](https://substackcdn.com/image/twitter_name/w_96/florianederer.jpg)
The in-game performance of professional soccer players who had a recent COVID-19 infection, drops by 6%.
Performance is still 5% lower 6 months later with notable negative spillovers on team performance.
Cool paper by @schmal_w & @jjreade:
dice.hhu.de/fileadmin/reda…
![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%2FFBsJpTDXoAU1-Jr.jpg)
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^related: big cross-country data effort on mental health during pandemic
![Twitter avatar for @arpitrage](https://substackcdn.com/image/twitter_name/w_96/arpitrage.jpg)
Neat paper by @cqcampos and Caitlin Kearns: LA implemented "Zones of Choice" — areas of school market choice with more options.
Improved competition led to better outcomes, which parents value. Not just selection.
dropbox.com/s/kf8j3g1yeau2…
![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%2FFB1hGTcXIAQSE5K.png)
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![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%2FFB1hGTdX0AUlqRy.png)
![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%2FFB1hGTjWYAcBHDy.png)
More: yield curve inversion, video games and well-being, fiscal stimulus something, Airbnb review reciprocity, exchange rate classification, foreign UST demand, opioids bad for municipal finances, dowry law
Public goods
![Twitter avatar for @tbenthompson](https://substackcdn.com/image/twitter_name/w_96/tbenthompson.jpg)
I'm super excited to announce the release of glum (github.com/Quantco/glum/), a Python-first generalized linear modeling library. We focused a lot on correctness, performance and a powerful range of features. glum gets a 3-10x (or more) speed up over glmnet. It's also fun to use!
![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%2FFBc-jzQUYAMJbuL.jpg)
![Twitter avatar for @danilaserra_eco](https://substackcdn.com/image/twitter_name/w_96/danilaserra_eco.jpg)
**ADOPT A PAPER**
AaP matches papers of junior economists to experts in their field. It aims to expand & diversify access to high quality feedback.
Eligibility: APs in research intensive universities in the US, Canada & Europe.
Apply: adoptapaper.org/apply
![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%2FFB0wL0mXIAQX8dV.jpg)
![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%2FFB0wL0mWUAIBdZh.jpg)
![Twitter avatar for @andrewheiss](https://substackcdn.com/image/twitter_name/w_96/andrewheiss.jpg)
#EconTwitter hive mind: once upon a time someone posted a link to a website that was an index of a ton of applied micro studies searchable by title and indexed by method (so you could filter by diff-diff, RCT, RD, IV, whatever). Does anyone know where that is?
^link
Interesting discussions
![Twitter avatar for @ben_golub](https://substackcdn.com/image/twitter_name/w_96/ben_golub.jpg)
Here's a basic queuing theory fact that may have behavioral/psychological implications.
If customers take on avg 10 minutes to serve and arrive randomly at a rate of 5.8 per hour, then with one bank teller working, expected wait is 5 hours. With two tellers, 3 minutes.
1/
![Twitter avatar for @wuthrich_k](https://substackcdn.com/image/twitter_name/w_96/wuthrich_k.jpg)
this is super interesting! shows that the STATA default "reg y x, robust" may be problematic and makes a case for using "reg y x, vce(hc3)" instead.
![Twitter avatar for @DataColada](https://substackcdn.com/image/twitter_name/w_40/DataColada.jpg)
Data Colada @DataColada