Open sourcing my regression lectures ๐ป
AI is changing how we teach. Hereโs one way Iโm adapting: Iโve open-sourced my regression course, POLI 450A, built on Jens Hainmuellerโs original class.
The course is suitable for first-year political science PhDs, as well as advanced undergraduate students in economics, political science, and other social sciences.
The materials include slides, R code, data, worksheets, and a short video for every lecture.
https://t.co/yUl3hs5P0Y
Happy to share slides for six lectures on "causal panel analysis" based on my recent short course at Waseda.
https://t.co/byutHLxU7V
Written for applied researchers.
1/ Happy to release StatsClaw โ an open-source multi-agent workflow for building statistical software with AI. w/ @qintianzhu
Site: https://t.co/4svIckWc4m
Paper: https://t.co/HrzzB4BJcG
Our paper "When Does Mandatory Price Disclosure Lower Prices?" is out in the Journal of Political Economy Microeconomics!
When does price transparency lower prices -- and when doesn't it?
Paper: https://t.co/C1OLLIovkR
Summary: https://t.co/DEOEJaLG6d
Studying how generative AI, and in particular agentic AI, shapes human learning incentives and the long-run evolution of societyโs information ecosystem, from @DrDaronAcemoglu, Dingwen Kong, and Asuman Ozdaglar https://t.co/XTigJqLHat
When AI first arrived on the scene, I worried it would make economists, or even critical thinkers more broadly, less valuable. In my travels in the past 6 months to work with non-profits, for profits, and government agencies, I have observed how people are actually using AI. I have watched them fumble around with insights they clearly did not create themselves.
My fears are now assuaged. One observation is that AI can produce something that in some cases is very wrong and in others looks nearly right, but is not quite there. Even if in time AI improves to "nearly right" or "exactly right" every time, a second issue still arises: explaining the materials.
Explaining why an answer is almost correct but subtly off requires exactly the critical thinking skills that created the knowledge in the first place. Even explaining "exactly right" material takes critical thinking. I've watched smart people confidently present AI-generated material they clearly don't fully understand. The words sound right. But when someone pushes back just a little bit, the sand castle crumbles.
It is quite difficult to defend what you didn't build. This leads me to now make the optimistic case for human expertise. The value of deeply understanding something โ of having built the knowledge yourself โ hasn't diminished with AI. If anything, it's increased. The people who can tell the difference between "nearly right" and "right" are more valuable than ever. The people who can explain the subtle details about something that is exactly right are invaluable.
Creating knowledge still matters. Maybe now more than ever.
This is a useful paper on open-ended survey data. Open-ended questions can help reveal individualsโ motives, mental models and decision-making processes. Open-ended survey data have been used to study whatโs on top of peopleโs minds w.r.t. important economic policy questions.
Iโve started an ongoing project to collect all the datasets which economists can use, all in one place, organized by topic. Started with 50, further suggestions are extremely welcome. It will grow considerably.
New paper on โAlgorithmic Coercionโ: We find that a single firm using a pricing algorithm can induce its rivals to set substantially higher prices, even when rivals maximize short-run profits and cannot collude.
Something is rotten in econ academe when 2nd-year MIT PhD students fake research to get into QJE. That some still express surprise shows willful blindness to a system built to reward speed & visibility over rigor & insight. Integrity should be a standard, not a personality trait.
Quick @Stata tip: I've added 43 new tips to my book, bringing the total to 140.
You can download "Quick Stata Tips" and the accompanying .do file for free at https://t.co/MY4O6dzlgD
Who benefits when platforms use historical consumer data for pricing? Total consumer surplus falls but most consumers benefit at the expense of those with the highest WTP. Platform sellers benefit even though they do not have access to consumer data. https://t.co/CPoTmSOCFt
Excited to share my latest WP! Using data on the universe of gas stations in CA, we show asymmetric price effects for entry and exit of a nearby station. Entry is associated with an immediate decrease in prices at incumbent stations equivalent to ~7% of markups.
This paper has been in the making for so long that eight children across the co-author group were born between the time we started and now!
But it is finally out, and you can check it at https://t.co/ZFSNCPrXsg
PhD Students - Here is an example of a good conclusion.
A good conclusion should have the following 6 parts.
๐. ๐๐๐ฌ๐ญ๐๐ญ๐ ๐ญ๐ก๐ ๐๐๐ฌ๐๐๐ซ๐๐ก ๐๐ซ๐จ๐๐ฅ๐๐ฆ
Begin by revisiting the research problem or question that your paper addressed. This reminds the reader of the core focus of your study and sets the stage for summarizing your findings.
๐. ๐๐ฎ๐ฆ๐ฆ๐๐ซ๐ข๐ณ๐ ๐๐๐ฒ ๐ ๐ข๐ง๐๐ข๐ง๐ ๐ฌ
Provide a brief summary of the main findings of your research. Highlight the most significant results and insights that emerged from your analysis. This should be concise and focused on the most impactful data.
๐. ๐๐ข๐ฌ๐๐ฎ๐ฌ๐ฌ ๐ญ๐ก๐ ๐๐ฆ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง๐ฌ
Explain the implications of your findings. Discuss how they contribute to the existing body of knowledge, their practical applications, or their relevance to future research. This helps to contextualize your work within the broader field.
๐. ๐๐๐ค๐ง๐จ๐ฐ๐ฅ๐๐๐ ๐ ๐๐ข๐ฆ๐ข๐ญ๐๐ญ๐ข๐จ๐ง๐ฌ
Address any limitations of your study. Acknowledging these limitations demonstrates academic integrity and provides a balanced view of your research. It also opens the door for future research opportunities.
๐. ๐๐ฎ๐ ๐ ๐๐ฌ๐ญ ๐ ๐ฎ๐ญ๐ฎ๐ซ๐ ๐๐๐ฌ๐๐๐ซ๐๐ก ๐๐ข๐ซ๐๐๐ญ๐ข๐จ๐ง๐ฌ
Based on your findings and limitations, propose areas for future research. This can inspire other researchers to explore related questions and expand on your work.
๐. ๐๐ง๐ ๐ฐ๐ข๐ญ๐ก ๐ ๐๐ญ๐ซ๐จ๐ง๐ ๐๐ฅ๐จ๐ฌ๐ข๐ง๐ ๐๐ญ๐๐ญ๐๐ฆ๐๐ง๐ญ
Conclude with a powerful statement that reinforces the importance of your research. This could be a call to action, a thought-provoking quote, or a reflection on the broader implications of your work. Anything you'd like to add?
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Finally had the chance to spend the Spring Festival at home. My mom cried after seeing me off to the car ๐ฅฒ
Now I finally realize that life is short. Parents are getting older, and each meeting means one less opportunity to see them again.