New results on Facebook advertising

There has been so much misinformation about this topic, much of it still persists.  Here is a new paper by many researchers, Hunt Allcott and Matt Gentzkow are the first two names.  Here is the abstract:

We study the effects of social media political advertising by randomizing subsets of 36,906 Facebook users and 25,925 Instagram users to have political ads removed from their news feeds for six weeks before the 2020 US presidential election. We show that most presidential ads were targeted toward parties’ own supporters and that fundraising ads were most common. On both Facebook and Instagram, we found no detectable effects of removing political ads on political knowledge, polarization, perceived legitimacy of the election, political participation (including campaign contributions), candidate favorability, and turnout. This was true overall and for both Democrats and Republicans separately.

Here is the full link.

Saturday assorted links

1. Who benefits from Uber surge pricing?

2. The Way of Code, a new on-line product, some might call it a book, adapted by Rick Rubin and based on Lao Tzu.

3. What is wrong with Sanskrit?

4. Price quiz for auctioned artworks (NYT).  I do not find this to be the reductio the NYT seems to think it is.  By the way, the Dumas I do not like and it is not such a great Baselitz.  The Joan Mitchell is clearly better than the Hans Hoffman, pity to those who cannot see that.

5. It seems there are no actual signs of life on that distant planet (NYT).

6. Corporate expense accounts — renaming arbitrage!

Digital tech sentences to ponder

The first generation who engaged with digital technologies has reached the age where risks of dementia emerge. Has technological exposure helped or harmed cognition in digital pioneers?

…Use of digital technologies was associated with reduced risk of cognitive impairment (OR = 0.42, 95% CI 0.35–0.52) and reduced time-dependent rates of cognitive decline (HR = 0.74, 95% CI 0.66–0.84). Effects remained significant when accounting for demographic, socioeconomic, health and cognitive reserve proxies.

So maybe digital tech is not so bad for us after all?  You do not have to believe the postulated relatively large effects, as the more likely conclusion is simply that, as in so many cases, treatment effect in the social sciences are small.  That is from a recent paper by Jared F. Benge and Michael K. Scullin.  Via the excellent Kevin Lewis.

So many mistakes

Scott Alexander claims “I often disagree with Marginal Revolution, but their post today made me a new level of angry…”  The topic is US AID.

I think when Scott is angry (much less “a new level of angry”) he does not think straight.  First, someone should tell him that Emergent Ventures overhead is typically two percent, five percent for dealing with screwier banking systems.  (That is one reason why I won the recent Time magazine award for innovation in philanthropy.)  I am well aware there are various ways of calculating overhead, but there are now more than one thousand Emergent Ventures winners, and all of them can testify to how radically stripped-down the process is.

This sentence is also wildly off:

But it [o3] estimated that if the federal government gives a dollar of research funding to Mercatus, about 40% would go to combined university and Mercatus overhead – higher than the average USAID charity.

For one thing, Scott could have simply asked me how it works.  It is also the case that we do not receive or seek federal government research funding, but if we did the overhead going to GMU would be zero (are you listening o3?).  Depending on the exact source of the funding, very likely we would make a lot of money on such grants because we would receive significant “overhead” payments for what would not be actual overhead expenses.  That is one big problem with the system, I might add.  We at Mercatus have made the judgment that we do not wish to become institutionally/financially addicted to such overhead…and I wish more non-profits would do the same.

Scott takes me to be endorsing Rubio’s claim that the third-party NGOs simply pocket the money.  In reality my fact check with o3 found (correctly) that the money was “channelled through” the NGOs, not pocketed.  Scott lumps my claim together with Rubio’s as if we were saying the same thing.  My very next words (“I do understand that not all third party allocations are wasteful…”) show a clear understanding that the money is channeled, not pocketed, and my earlier and longer post on US AID makes that clearer yet at greater length.  Scott is simply misrepresenting me here.

There was an earlier time when US AID did much less channeling through American third party NGOs.  That was in my view a better regime, though of course Congress wanted to spend more money on Americans, and furthermore parts of the Republican Party, often in the executive branch, viewed the NGO alternative as more flexible and also more market-friendly.  That created a small number of triumphs, such as PEPFAR, and a lot of waste, and I am happy to clear away much of that waste.  Doing so also will improve aid decision-making in the future.  It is right to believe that US AID can operate on another basis, and also right to wish to stop a system that allows spending on ostensible “democracy promotion.”  I find it a useful discipline to have an initial approach to the problem that starts with this question “if you can’t find poverty-fighting domestic institutions in a country to fund directly, with sufficient trust, perhaps you should be giving aid elsewhere.”  I also find it plausible that doing a lot of initial and pretty radical clearing away of NGO relations is the best way to get there, though I agree that point is debatable.

When I read from the well-informed Charlie Robertson that “My data suggests US AID flows in 2024 were equivalent to: 93% of Somalia’s government revenues, 61% in Sudan, just over 50% in South Sudan and Yemen” I get pretty nervous.  Don’t you?  I do see this can be argued either way (can we really countenance immediate collapse?), but I am hardly shocked or outraged by the skeptical attitude of the American people here.  I say spend the money where it can be put to good use, and also where those uses are politically sustainable.  I do understand that this will reallocate aid toward what are on the whole wealthier countries.  In those places you still can do a great deal of good for poorer people.

Scott writes: “When Trump and Rubio try to tar them [US AID] as grifters in order to make it slightly easier to redistribute their Congress-earmarked money to kleptocrats and billionaire cronies, this goes beyond normal political lying into the sort of thing that makes you the scum of the earth, the sort of person for whom even an all-merciful God could not restrain Himself from creating Hell.”  Is that how the rationalist community should be presenting itself?  In a time when innocent Americans are gunned down in the streets for their (ostensible) political views, and political assassination attempts seem to be rising, and there even has been a rationalist murder cult running around, does this show a morally responsible and clear thinking approach to the post that was published?

More generally, I wonder if Scott ever has dealt with US AID or other multilaterals, or the world of NGOs, much of which surrounds Washington DC.  I have lived in this milieu for almost forty years, and sometimes worked in it, from various sides including contractor.  A lot of people have the common sense to realize that these institutions are pretty wasteful (not closedly tied to measured overhead btw), too oriented toward their own internal audiences, and also that the NGOs (as recipients, not donors) “capture” US AID to some extent.  As an additional “am I understanding this issue correctly?” check, has Scott actually spoken to anyone involved in this process on the Trump administration side?

There are a bunch of other things wrong with Scott’s discussion of overhead, but it is not worth going through them all.

I am all for keeping the very good public health programs, and yes I do know they involve NGO partners, and jettisoning a lot of the other accretions.  That is the true humanitarian attitude, and it is time to recognize it as such.  Better rhetoric, better thinking, and less anger are needed to get us there.  It is now time for Scott to return to his usual high standards of argumentation and evidence.

The best bookstore in NYC, and then some

McNally Jackson, in Rockefeller Center.

It reminds me of Daunt Books in London — super smart titles on display, not huge but incredible selection, sections organized by country, and if you buy a lot of books you get a free bag.  I walked in, not planning on buying anything in particular, and pretty quickly spent $500.

MOMA also has the amazing Jack Whitten exhibit, a freshly rehung 50s-70s floor (A+), a Woven Textiles and Abstraction show, and a Hilda af Klint show, botanical illustrations.  One of my best visits there ever.

I did get to see Steph and Ayesha Curry at the Time magazine event last night (the first and only time he will have to share one of his awards with me).  They are both remarkably charismatic in person, both individually and as a couple.

Sadly now I must leave town after only such a brief stint…

Sentences to ponder

In a landmark 2013 paper, David Autor, David Dorn and Gordon Hanson found that America lost an average of 90,000 jobs per year between 1990 and 2007 because of imports from China. But put that in perspective. According to Strain, five million Americans currently separate from their employers per month. Plus, in a 2019 paper, Robert C. Feenstra, Hong Ma and Yuan Xu found that the China shock job losses were largely offset by job gains, owing to higher exports.

Here is more from David Brooks (NYT).

Friday assorted links

1. More on Alberta separatism (NYT).  And Polymarket.

2. It does not work when only a single university institutes post-tenure review.

3. “The Journal earlier reported that the device won’t be a phone, and that Ive and Altman’s intent is to help wean users from screens.

4. Sholto Douglas podcast on Claude 4.

5. Alasdair Macintyre, RIP.  And a remembrance, a wonderful piece.

6. What happens when your customers come from GPT?

Economics coauthorships in the aftermath of MeToo

We study changes in coauthorships in economics, after the MeToo movement, using NBER and CEPR working papers between January 2004 and December 2020. We identify three main shifts in collaboration patterns. First, compared to pre-MeToo levels, collaborations across genders in an author’s seniority group increased: we estimate a 12.3% increase of women coauthors per 100 men-authored papers. Second, coauthorship shares of senior with junior economics declined by 3.0%, indicating a shift towards sorting of collaborations by seniority. Third, shares of new coauthorships declined by 5.4%, driven by drops in senior economists’ shares of new junior and new junior women by 18.4% and 48.0%, respectively. The results are robust to different specifications.

That is from a new paper by Noriko Amano-Patiño, Elisa Faraglia, and Chryssi Giannitsarou.  Via the excellent Kevin Lewis.  And here is a related paper on who receives credit for cross-gender co-authorships.

No Evidence of Effects of Testosterone on Economic Preferences

There is conflicting evidence on whether testosterone affects economic preferences such as risk taking, fairness and altruism, with the evidence suggesting significant effects coming from correlational studies or small underpowered testosterone administration studies. To credibly test this hypothesis, we conducted a large pre-registered double-blind randomized controlled trial with = 1,000 male participants; 10–20 times larger than most previous randomized controlled studies. Participants were randomly allocated to receive a single dose of either placebo or intranasal testosterone. They thereafter carried out a series of economic tasks capturing social preferences, competitiveness and risk preferences. We fail to find any evidence of a treatment effect for any of our nine primary outcome measures, thereby failing to conceptually replicate several previous studies reporting positive findings that used smaller sample sizes. In line with these results, we furthermore find no evidence of an association between basal testosterone and economic preferences, failing to also conceptually replicate previous correlational studies.

By Anna Dreber, et.al.

Claude 4, I attempt a first prompt and receive this answer

“What do you think was the best/most important piece published in the Journal of Political Economy over the last few years and why?”

Two papers that stand out as particularly important from recent years are:

1. “The Supply-Side Effects of Monetary Policy” (2024)

Authors: David R. Baqaee, Emmanuel Farhi, and Kunal Sangani Published in: Journal of Political Economy, Volume 132, Number 4 (April 2024)

This paper introduces a novel perspective on monetary policy transmission. The authors propose a supply-side channel for the transmission of monetary policy, showing that when high-markup firms have lower pass-throughs than low-markup firms, positive demand shocks such as monetary expansions alleviate cross-sectional misallocation by reallocating resources to high-markup firms UchicagoNBER.

The key innovation is demonstrating that positive “demand shocks” are accompanied by endogenous positive “supply shocks” that raise productivity and lower inflation The Supply-Side Effects of Monetary Policy | Journal of Political Economy: Vol 132, No 4. Their calibration suggests that the supply-side effect amplifies the total impact of monetary shocks on output by about 70% The Supply-Side Effects of Monetary Policy | Journal of Political Economy: Vol 132, No 4.

2. “Consumption and Income Inequality in the United States since the 1960s” (2023)

Authors: Bruce D. Meyer and James X. Sullivan Published in: Journal of Political Economy, Volume 131, Number 2 (February 2023)

This paper provides important insights into inequality trends by comparing consumption and income inequality over five decades. While overall income inequality rose over the past 5 decades, the rise in overall consumption inequality was small Consumption and Income Inequality in the United States since the 1960s | Journal of Political Economy: Vol 131, No 2. The authors argue that the declining quality of income data likely contributes to these differences for the bottom of the distribution Consumption and Income Inequality in the United States since the 1960s | Journal of Political Economy: Vol 131, No 2, while asset price changes likely account for some of the differences in recent years for the top of the distribution Consumption and Income Inequality in the United States since the 1960s | Journal of Political Economy: Vol 131, No 2.

Why These Papers Matter

Both papers represent significant contributions to core areas of economics:

  1. The Supply-Side Effects paper fundamentally changes how we think about monetary policy transmission by identifying a previously overlooked channel that can explain why monetary expansions might be more effective than traditional models suggest.
  2. The Consumption and Income Inequality paper challenges the conventional wisdom about rising inequality by showing that consumption inequality has not increased as dramatically as income inequality, which has important implications for welfare analysis and policy design.

The allocation of US AID funds

According to Marco Rubio only 12 cents of every dollar spent from USAID went to recipients, the other 88 cents went to NGOs who pocketed the money.

I tried to fact check that with o3:

However you draw the line, before 2017 well over half—and usually more like 75-90 percent—of USAID money was channelled through third-party NGOs, contractors, and multilateral agencies rather than handed straight to the governments or other local actors in the partner country.

I do support PEPFAR and the earlier vaccine programs, but perhaps those estimates have been underreported as of late?  I do understand that not all third party allocations are wasteful, nonetheless something seems badly off here.  Nor were many US AID defenders keen to deal with such estimates when the major debate was going on.

My excellent Conversation with Theodore Schwartz

Here is the audio, video, and transcript.  Here is part of the episode summary:

Tyler and Ted discuss how the training for a neurosurgeon could be shortened, the institutional factors preventing AI from helping more in neurosurgery, how to pick a good neurosurgeon, the physical and mental demands of the job, why so few women are currently in the field, whether the brain presents the ultimate bottleneck to radical life extension, why he thinks free will is an illusion, the success of deep brain stimulation as a treatment for neurological conditions,  the promise of brain-computer interfaces, what studying epilepsy taught him about human behavior, the biggest bottleneck limiting progress in brain surgery, why he thinks Lee Harvey Oswald acted alone, the Ted Schwartz production function, the new company he’s starting, and much more.

And an excerpt:

COWEN: I know what economists are like, so I’d be very worried, no matter what my algorithm was for selecting someone. Say the people who’ve only been doing operations for three years — should there be a governmental warning label on them the way we put one on cigarettes: “dangerous for your health”? If so, how is it they ever learn?

SCHWARTZ: You raise a great point. I’ve thought about this. I talk about this quite a bit. The general public — when they come to see me, for example, I’m at a training hospital, and I practiced most of my career where I was training residents. They’ll come in to see me, and they’ll say, “I want to make sure that you’re doing my operation. I want to make sure that you’re not letting a resident do the operation.” We’ll have that conversation, and I’ll tell them that I’m doing their operation, but that I oversee residents, and I have assistants in the operating room.

But at the same time that they don’t want the resident touching them, in training, we are obliged to produce neurosurgeons who graduate from the residency capable of doing neurosurgery. They want neurosurgeons to graduate fully competent because on day one, you’re out there taking care of people, but yet they don’t want those trainees touching them when they’re training. That’s obviously an impossible task, to not allow a trainee to do anything, and yet the day they graduate, they’re fully competent to practice on their own.

That’s one of the difficulties involved in training someone to do neurosurgery, where we really don’t have good practice facilities where we can have them practice on cadavers — they’re really not the same. Or have models that they can use — they’re really not the same, or simulations just are not quite as good. At this point, we don’t label physicians as early in their training.

I think if you do a little bit of research when you see your surgeon, there’s a CV there. It’ll say, this is when he graduated, or she graduated from medical school. You can do the calculation on your own and say, “Wow, they just graduated from their training two years ago. Maybe I want someone who has five years under their belt or ten years under their belt.” It’s not that hard to find that information.

COWEN: How do you manage all the standing?

And:

COWEN: Putting yourself aside, do you think you’re a happy group of people overall? How would you assess that?

SCHWARTZ: I think we’re as happy as our last operation went, honestly. Yes, if you go to a neurosurgery meeting, people have smiles on their faces, and they’re going out and shaking hands and telling funny stories and enjoying each other’s company. It is a way that we deal with the enormous pressure that we face.

Not all surgeons are happy-go-lucky. Some are very cold and mechanical in their personalities, and that can be an advantage, to be emotionally isolated from what you’re doing so that you can perform at a high level and not think about the significance of what you’re doing, but just think about the task that you’re doing.

On the whole, yes, we’re happy, but the minute you have a complication or a problem, you become very unhappy, and it weighs on you tremendously. It’s something that we deal with and think about all the time. The complications we have, the patients that we’ve unfortunately hurt and not helped — although they’re few and far between, if you’re a busy neurosurgeon doing complex neurosurgery, that will happen one or two times a year, and you carry those patients with you constantly.

Fun and interesting throughout, definitely recommended.  And I will again recommend Schwartz’s book Gray Matters: A Biography of Brain Surgery.

China divination of the day

The AI-Spiritual-Commerce loop went viral. “DeepSeek Occult Commands” became an online hit. On WeChat, a flood of mini-programs appeared—“AI Face Reading,” “AI Bazi Calculator”—reaching the daily user numbers of medium e-commerce apps. A 9.9-yuan facial reading could be resold again and again through referral links, with some users earning over 30,000 yuan a month. DeepSeek hit 20 million daily active users in just 20 days. At one point, its servers crashed from too many people requesting horoscopes.

On social media, commands like “Full Bazi Chart Breakdown” and “Zi Wei Dou Shu Love Match” turned into memes. One user running a fortune-telling template got over 1,000 private messages in ten days. The AI could write entire reports on personality, karma, and even create fake palm readings about “past life experiences.” People lined up online at 1:00 a.m. to “get their fate explained.”

Meanwhile, a competing AI company, Kimi, released a tarot bot—immediately the platform’s most used tool. Others followed: Quin, Vedic, Lumi, Tarotmaster, SigniFi—each more strange than the last. The result? A tech-driven blow to the market for real human tarot readers.

In this strange mix, AI—the symbol of modern thinking—has been used to automate some of the least logical parts of human behavior. Users don’t care how the systems work. They just want a clean, digital prophecy. The same technology that should help us face reality is now mass-producing fantasy—on a huge scale.

Here is the full story.  Via the always excellent The Browser.