Why do Americans No Longer Work So Much More Than Non-Americans?
In the 1990s, Americans used to work much more than non-Americans. Nowadays, about half of the gap in hours worked has reversed. To evaluate the convergence of working hours, we develop a tractable model of labor supply enriched with multiple sources of heterogeneity across individuals, an extensive margin of participation, multi-member households, and an elaborate system of taxes and benefits upon non-employment. Using detailed measurements from micro-level and aggregate datasets, we identify model parameters and sources of heterogeneity across individuals for various countries. We run a horse race between competing explanations and find that U.S. hours per person declined after 2000 owing mainly to the rise of government health benefits provided to the non-employed. Non-U.S. countries have generous benefits for the non-employed, but this generosity has not changed as much over time as in the United States, and public health coverage does not depend on employment status or income levels. For these countries, the rise of labor supply is generally accounted for by a mix of factors, such as the rise of wages and the falling disutility of work.
That is from a new NBER working paper by
Interpreting Polygenic Prediction of Cognitive Ability
The subtitle is Evidence for Direct, Reliable, and Portable Genetic Effects, and the authors are Tobias Wolfam, et.al. The abstract:
The interpretation of polygenic scores (PGS) for general cognitive ability (GCA) remains contested, with concerns about indirect genetic effects, environmental confounding, cross-ancestry portability, and the gap between PGS prediction and twin heritability estimates. Relying on a newly constructed PGS using within-family designs in two independent sibling cohorts (UK Biobank, N=4,642 pairs; ABCD, N=736 pairs), we demonstrate that direct genetic effects account for the large majority of PGS prediction (within-family attenuation Correcting for measurement error in brief cognitive assessments, the within-family association with latent general ability is approximately 0.45, substantially higher than observed-scale estimates. Cross-ancestry portability follows theoretical expectations (66% effect retention in African Americans). Within families, higher PGS predicts greater educational attainment, occupational status, and reduced cardiometabolic disease risk, with no evidence for gene-environment interactions or substantial adverse pleiotropy. These findings replicate using a benchmark predictor based on publicly available data, confirming they reflect properties of cognitive genetic architecture rather than idiosyncrasies of a particular score.
I expect results like this will hold up. Here is commentary from GPT Pro.
Wow Nepal
Wow Nepal, 10728 Fairfax Blvd, Fairfax, VA, 703-880-9898, open 11-9 every day.
The “Wow” here is exactly right, as it is wonderful to have a new great restaurant around. Most Nepalese restaurants in America are variants on north Indian food with batches of half-hearted momos thrown in. This place is the real thing. The goat momos are among the best dishes in northern Virginia right now. The fish is excellent, everything else at least very good. Note that the place is small and fills up early, so arrive in time to get your seat. Strongly recommended.
Monday assorted links
The Public Choice Outreach Conference!
The annual Public Choice Outreach Conference is a crash course in public choice. The conference is designed for undergraduates and graduates in a wide variety of fields. It’s entirely free. Indeed scholarships are available! The conference will be held Friday June12- Sunday June 14 , near Washington, DC in Reston, VA. Lots of great speakers including Tyler, myself, Bryan Caplan, Robin Hanson, Jon Klick, Shruti Rajagopalan and more.
Please apply and encourage your students to apply.
Migrant Income and Long-Run Economic Development
We study how international migrant income prospects affect long-run development in origin areas. We leverage the 1997 Asian Financial Crisis exchange rate shocks in a shift-share identification strategy across Philippine provinces. Initial migrant income shocks are magnified six-fold over time, increasing domestic income, education levels, migrant skills, and high-skilled migration. Remarkably, 74.9 percent of long-run income gains come from domestic rather than migrant income. Trade driven impacts of exchange rate shocks are orthogonal to effects via migrant income. A structural model reveals that 19.7 percent of long-run income gains stem from educational investments. International migration fosters broad economic development in origin communities.
That is from a recent AER piece by Gaurav Khanna, Emir Murathanoglu, Caroline Theoharides, and Dean Yang. Here is a good thread on the piece.
Does this have implications for higher ed in particular?
Declining fertility and population loss pose significant challenges for state and federal local governments responsible for providing a range of services to citizens, including education, health care, and infrastructure. Indeed, many areas are already experiencing outright population decline, with roughly half of U.S. counties losing population between 2010 and 2020. This paper examines how shrinking and aging populations affect the operations and fiscal sustainability of state and local governments. Preliminary evidence presented in this paper suggests that scaling down educational services is considerably more difficult than scaling up. The estimated per-enrollee cost increases associated with a 10 percent enrollment decline are four times larger than the cost decreases associated with a 10 percent enrollment increase. Regions with contracting populations will face additional challenges as a smaller working-age population bears the burden of funding pensions and retiree health plans for larger aging cohorts. While lower fertility can create a short run fiscal dividend as local governments serve fewer children, that dividend will only be realized if state and local public officials make efficient retrenchment a priority.
From Jeffrey Clemens, via the excellent Kevin Lewis. As I think JFV mentioned lately, we have not done enough thinking about what a society with low TFR really is going to look like after a while.
Auden on Iceland
If you have no particular intellectual interests or ambitions and are content with the company of your family and friends, then life on Iceland must be very pleasant, because the inhabitants are friendly, tolerant, and sane. They are genuinely proud of their country and its history, but without the least trace of hysterical nationalism. I always found that they welcome criticism. But I had the feeling, also, that for myself it was already too late. We are all too deeply involved Europe to be able, or even to wish to escape. Though I am sure you would enjoy a visit as much as I did, I think that, in the long run, the Scandinavian sanity would be too much for you, as it is for me. The truth is, we are both only really happy living among lunatics.
That is from W.H. Auden and Louis MacNeice, Letters from Iceland, from 1937, which is one of the better travel books, if indeed that is what it is.
Good sentences
This leads us to the next of Freud’s major contributions to neuroscience: his realization that cognition is, at bottom, wishful.
That is from the new and notable Mark Solms, The Only Cure: Freud and the Neuroscience of Mental Healing. This is a good book for people who underrated Freud, or think he is a mere charlatan.
The CA Minimum Wage Increase: Summing Up
Two recent joint-papers Did California’s Fast Food Minimum Wage Reduce Employment? by Clemens, Edwards and Meer and The Effects of California’s $20 Fast Food Minimum Wage on Prices by Clemens, Edwards, Meer and Nguyen give what I think is a plausible and consistent account of California’s $20 fast food minimum wage.
California’s $20 fast food minimum wage raised wages in the sector by roughly 8 percent relative to the rest of the country but employment fell by 2.3 to 3.9 percent (depending on specification, median ~3.2%), translating to about 18,000 lost jobs. Food away from home (FAFH) prices in California’s four CPI-reporting MSAs rose 3.3–3.6 percent relative to 17 control MSAs. Falsification tests on Food at Home and All Items Less Food and Energy show zero differential movement—this is specific to restaurant prices.
What’s interesting is that the papers are independently estimated but the fit is consistent. The price paper uses Andreyeva et al.’s demand elasticity of -0.8 to convert the estimated price increases into an implied quantity declines: about 3.9–4.1 percent in limited-service and 1.7–1.8 percent in full-service. These align well with the employment declines of 3.2 and 2.1 percent estimated in the first paper.
The consistency tells us something about the mechanism. One thing we have learned about the minimum wage in recent years is that the pass-through effect is large and more of the employment decline is driven by pass through than by labor-capital substitution. In other words, prices rose, quantity demanded fell, and that’s what killed the jobs—not robots replacing workers. Not today, anyway.
In terms of welfare, the bulk of employed workers get an 8% wage increase, a small minority get disemployed. The big transfer was from consumers to workers. California has roughly 39 million residents, all of whom face 3.3–3.6% higher FAFH prices. The transfer is likely regressive — lower-income households spend a larger budget share on fast food specifically. So the policy effectively taxes low-income consumers generally to raise wages for a subset of low-income workers, while eliminating jobs for another subset. Your mileage may vary but I don’t see this as a big win for workers. We thought small increases in the minimum wage were absorbed–maybe some were or maybe they were just hard to estimate–but you can’t extrapolate the small increases to big ones–the effect is non-linear. Big increases in the minimum wage start to bite.
As usual, when it comes to fast food there is no such thing as a free lunch.
Addendum: Clemens’s JEP paper continues to be the masterclass in how to think through minimum wage issues.
Sunday assorted links
Emergent Ventures winners, 53rd cohort
Elif Ozdemir, Ankara, align satellites.
Lily Zuckerman, University of Austin (and NYC), painting and general career support.
Benjamin Unger, NYC, AI to measure the performance of New York governments.
Maarten Boudry, Brussels, to write a book on who is really for progress, or not.
Allan Wandia, San Francisco, foundation models that learn directly from raw experimental data.
Richard Ng, London, AI agents.
Jordan Unokesan, London, trust scoring for government contractors.
Alexander Griffiths, London, infrastructure policy and decisions.
Pio Borgelt, 17, Osnabruck, AI.
Vedant Agarwal, 18, Cambridge UK, biosciences.
Chris Lee, Murietta, 18, CA, police recruitment.
Broderick Cotter, Austin, 17, finding the best materials for 3-D printing.
Jehan Azad, San Francisco, radar and UAPs.
Marius Drozdzewski, with collaborators, Berlin, German liberal periodical Aevum.
Ethan Galloway, London, 16, AI algorithms.
Keelan O’Carroll, Florida, happiness podcast.
Economic growth and the rise of large firms
Rich and poor countries differ in the size distribution of business firms. This paper shows that the right tail of the firm size distribution systematically grows thicker with economic development, both within countries over time and across countries. The author develops a simple idea search model with both endogenous growth and an endogenous firm size distribution. The economy features an asymptotic balanced growth path. Along the transition, Gibrat’s law holds at each date, and the right tail of the firm size distribution becomes monotonically thicker. The firm size distribution converges to Zipf’s distribution. The model also implies that policies favouring large firms can improve welfare due to the externality associated with idea search. Finally, the author extends the results obtained in the simple model to a general class of idea search models. Under common functional form assumptions, this model stands out as the only model within that class that is consistent with both Gibrat’s law and a thickening right tail.
That is by Zhang Chen, and a revised version will be appearing in Econometrica.
Saturday assorted links
2. Does it help poets to be religious?
4. U.S. prime age employment rate is near an all-time high. For a different perspective, here is NYT on AI and the job market. And new measures of AI task performance from MIT.
5. China’s AI education experiment.
6. Real retail U.S. electricity prices have fallen since 2010.
8. Is Mandarin being Europeanized?
9. 2000 or so additional pages of Leibniz will be published.
Advice for economics graduate students (and faculty?) vis-a-vis AI
From Isiah Andrews, via Emily Oster and the excellent Samir Varma. A good piece, though I think it needs to more explicitly consider the most likely case, namely that the models are better at all intellectual tasks, including “taste,” or whatever else might be knockin’ around in your noggin…I am still seeing massive copium. But the models still are not able to “operate in the actual world as a being.” Those are the complementarities you need to be looking for, namely how you as a physical entity can enhance the superpowers of your model, or should I express that the other way around? That might include gathering data in the field, persuading a politician, or raising money. I am sure you can think of examples on your own.