Heeyoung

Forthcoming in the AER: "Contamination Bias in Linear Regressions" by Paul Goldsmith-Pinkham, Peter Hull, and Michal Kolesár. aeaweb.org/articles?id=10…

The final version of AJPM paper is now available! A 1% increase in county bachelor's degree population corresponded to a 4.5% DECREASE in all-cause mortality for those with a bachelor's degree but a 1.2% INCREASE for those without. 50 days free access: authors.elsevier.com/a/1lSHT2gOwGJu…

Sociologists in the ASA migration section! Please consider voting for Yeeun, who would be an amazing bridge across different groups within and beyond our community👏 #soctwitter #ASA #sociology

A 🧵 on the ☀️Summer of 2025 #DiD reading list: Quite some authors have recently released new papers or updated their older ones. So here is a reading list dump in reverse chronological order: 👉 Clément de Chaisemartin, Xavier D'Haultfœuille (June 2025). Credible Answers to…

📊I've uploaded the 3rd stats lab post: "What is the Logic Behind a Two-Way Fixed Effects Analysis?" It includes the meaning of control unit or/and time fixed effect with graphs and R codes. idlhy0218.github.io/page%20buildin… #rstats #econtwitter #soctwitter #dataviz

📈Thanks everyone for the amazing response to my first post! I've uploaded the second stats lab with R for beginners on my webpage. The topic is "What Does It Mean to “Control” in Regression Analysis?" idlhy0218.github.io/page%20buildin… #rstats #econ #stats #statistics #data

Recently had a debate about two-way fixed effects and how it pretends to magically solve causal inference problems by just changing to a different DV than the one we actually care about. Here's that explained visually. Here's raw annual city temperature:

Dr. Walter S. Mathis of #yalepsych and @YaleMed is first author of a paper in @JAMANetworkOpen that found 17.7 percent of U.S. residents reside in pharmacy deserts, and an additional 8.9 percent rely on a single pharmacy for access. bit.ly/3FJ4f0g

Excited to share my paper on unemployment and suicide with @pescosol. Using big administrative data on suicide, we show that unemployed people are more likely to die by suicide, but their suicide risk is lower when and where more people are unemployed. doi.org/10.1177/000312…

#AcademicTwitter When writing a response to reviewers at RnR stage, do you prefer: 1️⃣ Including revised text in your response (with different formatting) 2️⃣ Simply mentioning revisions with page numbers

Featured in the latest Bulletin on Health: "Why Do More Educated Communities Have Better Health Outcomes?" nber.org/bh/20242/why-d…

I am now preparing some DiD lecture slides to give a talk at Amazon, and I have created this DiD Checklist. I am sharing them here in case some of you find it useful!