Category: Economics

Are Economists’ Preferences Psychologists’ Personality Traits?

I propose a method for mapping psychological personality traits to economic preferences. I use factor analysis to extract information on individuals’ cognitive ability and personality and embed it within a random preference model to estimate distributions of risk and time preferences and parameters related to choice inconsistency. I explain up to 60% of variation in average risk and time preferences and individuals’ capacity to make consistent choices using factors related to cognitive ability and three of the Big Five personality traits. Differences in preferred outcomes are related to personality, whereas mistakes in decisions are related to cognitive skill.

That is from a new JPE article by Tomáš Jagelka.  Here are earlier, less gated versions of the piece.

This kind of macro theory is underrated

Demand shocks as technology shocks:

We provide a macroeconomic theory where demand for goods has a productive role. A search friction prevents perfect matching between producers and potential customers. Larger demand induces more search, which in turn increases GDP and measured TFP. We embed the product-market friction in a standard neoclassical model and estimate it using Bayesian techniques. Business cycles are driven by preference shocks, true technology shocks, and investment-specific shocks. Preference shocks have qualitatively similar effects as true productivity shocks. These shocks account for a large share of the fluctuations in consumption, GDP, and measured TFP and can be identified using shopping time data.

That is from a new NBER working paper by Yan Bai, José-Víctor Ríos-Rull, and Kjetil Storesletten.  Aggregate demand matters, but in a context-specific way.  And demand and productivity shocks are part of one general integrated theory.

Dynamic surge pricing for Wendy’s

“Beginning as early as 2025, we will begin testing more enhanced features like dynamic pricing and daypart offerings, along with AI-enabled menu changes and suggestive selling,” he said. “As we continue to show the benefit of this technology in our company-operated restaurants, franchisee interest in digital menu boards should increase, further supporting sales and profit growth across the system.”

Here is one story of many, remember USA Today?  (Should they not be the go-to source for a Wendy’s story?)

I predict this will fail.  For one thing, “we will have discounts for Tuesdays at 3 p.m.” would have been better marketing.  Furthermore, many Wendy’s buyers are not wealthy, and they care a good deal about predictable prices.  Perhaps the higher prices will stick in their memories more?  The pitch: “I know I can go to Wendy’s and get my favorite meal there for xxxx” is a powerful meme.  I don’t even know what those numbers for “xxxx” should be!  Which I guess is part of the point.

Update from Ryan Bourne: Wendy’s already has backed down.

19th century British economic thought (another outline for my class)

1760-1830, typically considered peak of Industrial Revolution

Malthus, first decade of the 19th century

Ricardo’s Principles, 1817

Theory of rent

Theory of comparative advantage

The machinery question

Ricardo, The High Price of Bullion, 1810

Bullionist debates, Napoleonic wars, Ricardo and Malthus and Thornton

Ricardian equivalence, thinking in terms of systems and models

The Ricardians: James Mill and James Ramsey McCullough

The reign of classical economics, Nassau Senior

Poor Law debates

Unions and working hours

Ricardian socialists

John Stuart Mill: 1806-1873

Synthesis with French and Germans

Karl Marx

Genetic Insurance

Genetic testing identifies disease risk, enabling individuals to dodge environmental triggers, optimize treatments, and improve planning. Yet, the fear of increased insurance premiums deters many from undergoing tests. Genetic testing offers societal benefits but also presents significant distributional challenges. To address this, my 1994 paper proposed the idea of genetic insurance.

For a small fee genetic insurance would insure against the possibility of a positive test result. If the test came back positive the customer would be paid a large sum of money, enough to cover the expected costs of his disease or equivalently enough to allow him to purchase health insurance at the new risk premium. If the test turns out negative the customer would lose his genetic insurance fee but would gain the results of the test and also lower health insurance premiums. Those who have positive tests results would be paid enough money to pay their health care costs and would also benefit from being able to plan in accord with the test results. Under this proposal average insurance rates will fall and everyone will be made better off.\

Genetic insurance is insurance against changes in the cost of health insurance due to genetic information. John Cochrane would later generalize this idea to show that it’s possible to insure against changes in the cost of health insurance due to any new information. Cochrane called this time-consistent health insurance or health-status insurance; it’s a way of creating long-term health insurance contracts without binding an individual to a firm.

In an interesting paper, Helene Schernberg extends my 1994 paper. Schernberg shows that even if an individual has full-health insurance that can’t be taken away, there are other reasons to want genetic insurance. She focuses on the planning aspect. Genetic insurance could be used to shift consumption earlier, to better health states and thus improve life-time allocation.

Genetic testing could soon be a routine part of your medical journey. It offers insights into inherited disorders or susceptibility to various conditions. For example, if you are a woman with a BRCA mutation, you have a 55 to 72% lifetime risk of breast cancer.

This suggests that genetic information is valuable while providing a theoretical argument in favor of genetic insurance. The mechanism is described in Tabarrok (1994): Individuals purchase genetic insurance before taking a genetic test, thus receiving a compensation upon being identified as a high-risk. Tabarrok (1994) relates this genetic insurance payment to the need to cover expensive health insurance premia. I show that it also relates to the fact that a temporally risk-averse individual wishes to insure against the lifetime utility losses she may experience when her health prospects deteriorate after taking a genetic test.

Do high interest rates get people down?

Unemployment is low and inflation is falling, but consumer sentiment remains depressed. This has confounded economists, who historically rely on these two variables to gauge how consumers feel about the economy. We propose that borrowing costs, which have grown at rates they had not reached in decades, do much to explain this gap. The cost of money is not currently included in traditional price indexes, indicating a disconnect between the measures favored by economists and the effective costs borne by consumers. We show that the lows in US consumer sentiment that cannot be explained by unemployment and official inflation are strongly correlated with borrowing costs and consumer credit supply. Concerns over borrowing costs, which have historically tracked the cost of money, are at their highest levels since the Volcker-era. We then develop alternative measures of inflation that include borrowing costs and can account for almost three quarters of the gap in US consumer sentiment in 2023. Global evidence shows that consumer sentiment gaps across countries are also strongly correlated with changes in interest rates. Proposed U.S.-specific factors do not find much supportive evidence abroad.

That is from a new NBER working paper by Marijn A. Bolhuis, Judd N.L. Cramer, Karl Oskar Schulz, and Lawrence H. Summers.

Why don’t nations buy and sell territory more?

Egypt has agreed to a $35bn deal with the United Arab Emirates to develop the town of Ras el-Hekma town on its northwestern coast, Egyptian Prime Minister Mostafa Madbouly announced on Friday after weeks of speculations.

Madbouly said at a news conference, which was attended by Egyptian and Emirati officials, that Egypt will receive an advance amount of $15bn in the coming week, and another $20bn within two months.

The deal is the largest foreign direct investment in an urban development project in the country’s modern history, the prime minister said. It is a partnership between the Egyptian government and an Emirati consortium led by ADQ, he said.

Here is the full story, Nuuk here we come…

Hazlett on T-Mobile/Sprint

Tom Hazlett whose op-ed on the T-Mobile Sprint merger I quoted earlier writes me:

A few thoughts on your robust MR debate: (1) Were we to observe the counterfactual over the post-merger period we would have additional evidence – no disagreement. But the counterfactuals are themselves controversial to construct, and antitrust analyses typically make just the “before/after” prediction referenced. As the case against the merger (brought by several states, but rejected by a federal court) put it: “The proposed transaction would eliminate Sprint as a competitor… This increased market concentration will result in diminished competition, higher prices, and reduced quality and innovation.”

(2) There is powerful supporting evidence about merger effects apart from the retail price data. If real, quality-adjusted rates were anticipated to drop at even a faster clip (without a merger), reversing a pre-merger pro-consumer trend, then the post-merger performance in stock prices would have benefited the three incumbents in the market. Instead, two of the three firms have seen large abnormal declines in share values.

(3) The “cozy triopoly” theory is itself upended by both the firm stock price performances and the pattern of capital investments. The “Demsetz Critique” of the Structure-Conduct-Performance paradigm showed that a positive concentration-profits correlation does not imply monopolistic behavior if the proximate cause of the excess profits is efficiency. Here, T-Mobile’s network improvements appear to be caused by its merger-based spectrum acquisitions, and these upgrades linked to its subscriber growth and capital gains. The non-merging mobile rivals have suffered highly negative returns, likely in significant part from intensified competitive challenges that forced them to make large investments in response. In 2021, Verizon and AT&T combined to pay over $75 billion for spectrum rights in an FCC auction, easily the most ever paid by two (or any number of) license bidders. Cartel formation predictably reduces rivalry; evidence of firms aggressively increasing capex to better compete for market share runs counter to the expectation.

(4) Industry analysts – who provide third-party evaluations often given great weight by antitrust authorities – support these interpretations. In Dec. 2022, e.g., sector expert Craig Moffett (MoffettNathanson) wrote: “We expect T-Mobile to continue, and indeed accelerate, their market share gains versus AT&T and Verizon, as T-Mobile’s 5G network superiority becomes increasingly evident and increasingly relevant as 5G handsets become ubiquitous. The combination of a single telecom operator having both the industry’s best network and its lowest prices is unprecedented… “

(5) A 750-word oped is not the ultimate format for such evidence. My Working Paper with Robert Crandall (formerly of Brookings, now with the Technology Policy Institute) supplies a more complete analysis – comments again welcome.

Shruti Rajagopalan interviews Doug Irwin

Doug of course is one of the top trade economists.  Here is the audio, video, and transcript, from the same wonderful Mercatus team that brings you CWT.  Here is one excerpt:

RAJAGOPALAN: I have a different question on Adam Smith. We’re all taught Adam Smith’s division of labor, specialization, economies of scale, the cliff notes version of that. Then, we learn about absolute advantage in about five minutes. Then, we set it aside and start thinking about comparative advantage.The first question I have is does Adam Smith’s basic model of division of labor, specialization, and economies of scale anticipate the comparative advantage trade models, or does it actually undermine the comparative advantage trade models in the way that Krugman wrote about or something else?IRWIN: I think that Adam Smith has a broader view of trade, a much richer view of trade than what I would think is of the narrower David Ricardo theory of comparative advantage. If you have to read one of the two, read Adam Smith because it’s much more fun to read. Reading David Ricardo is more like reading a textbook in the sense that he doesn’t have this broad historical sense and these new rich ideas and how they’re interacting that leaves a lot to the imagination and leaves a lot to future research to flesh out.He’s saying, “England can produce wine and cloth. Here are the labor coefficients, and we’re going to do this static comparison between England and Portugal.” That’s a very narrow way of thinking about trade.RAJAGOPALAN: So badly written, you want the wine by the end of it.IRWIN: There’s a wonderful quote by George Stigler saying: “the only thing that someone will take away from reading Ricardo’s theory of comparative advantage is that they need a bottle of wine to get through it,” or something along those lines.RAJAGOPALAN: I agree.IRWIN: Adam Smith isn’t technically as sophisticated if you will, but in terms of the ideas, they’re very sophisticated. Obviously, he wasn’t thinking in terms of an economic model directly, but it’s a much richer overall discussion of trade that I think you can learn a lot from, even reading today.RAJAGOPALAN: When you see the world today, what do you think the world looks like more? Does it look more like Ricardian comparative advantage and the more recent models like Heckscher–Ohlin, and those things that came about? Do you think it really looks like the Adam Smith story, which is much more nuanced, pay attention to what’s happening in the domestic economy in terms of division of labor, specialization, and that is the lead-in to foreign trade, which is so deeply entangled with domestic trade?IRWIN: Well, I hate to waffle, but I think you need a little bit of both. It depends on the question, depends on the country, depends on the issue that you’re examining. These are just tools that you draw to help out your understanding of a particular situation. I will confess I’m a little bit more in favor of Adam Smith. I’ve always said that his theory of trade, and in particular his analysis of trade policy, which I think is underrated, is very sophisticated, and very wise, and has a lot to say to us today.RAJAGOPALAN: Beautifully written, if I may add.

There are now 100 episodes of Ideas of India, here is a link to all of them.  And here is my own earlier CWT with Doug.

Access to Medical Data Saves Lives

ProPublica: In January, the Biden administration pledged to increase public access to a wide array of Medicare information to improve health care for America’s most sick and vulnerable.

…So researchers across the country were flummoxed this week when the Centers for Medicare and Medicaid Services announced a proposal that will increase fees and diminish access to claims data that has informed thousands of health care studies and influenced major public health reforms.

Using big Medicare databases has never been cheap or easy. Under the current system, researchers could have the data transferred to secure university computers for about $20,000–that’s a lot but once the data was on the university computers it could be accessed by multiple researchers, cutting costs. A professor could buy the data and their PhD students, for example, wouldn’t have to pay again. Under the new system it will cost $35,000 for one researcher to access the data which will be held on government (CMS) computers. Moreover, it’s unclear how complex statistical analysis will be performed or how congested the CMS systems may become.

Research teams on complex projects can include dozens of people and take years to complete. “The costs will grow exponentially and make access infeasible except for the very best resourced organizations,” said Joshua Gottlieb, a professor at the University of Chicago’s Harris School of Public Policy.

Public data should be open access to researchers, with appropriate anonymization. We know from IP law that barriers to access reduce research and innovation; and in the medical sphere research and innovation saves lives. Open access is also a check on how governments spends taxpayer money and the effectiveness of such spending. I also worry that raising the dollar cost of access is a prelude to other restrictions. The NIH, for example, is restricting access to genetic data if it thinks the researcher will be asking forbidden questions. Even without such explicit restrictions, there is a chilling effect when researchers are beholden for access to the government and indeed to the very agencies they may be researching.

I place a high value on privacy but I get suspicious when governments invoke privacy to block citizen access to government data but not to block government access to citizen data. Medicare databases have always been appropriately anonymized and care is taken so the data are secured but the dangers of these databases in anyone’s hand, let alone researchers, is far less than anti-money laundering, KYC laws and suspicious transaction reports in banking, automated license plate readers that the police us to scan billions of license plates or mass surveillance of the communications of US citizens under FISA. Sadly, this list could easily be extended. Liberty thrives on the people’s privacy and the government’s transparency.

Nixonian Politics and Student Debt Cancellations

In the political economy chapter of our textbook, Modern Principles of Economics, Tyler and I discuss how voters appear especially responsive to economic conditions in the year of an election. Politicians who want to be reelected, therefore, are wise to do whatever they can to increase personal disposable income and reduce inflation in the year of an election even if this means decreases in income and increases in inflation at other times.

One of the most brazen examples comes from President Richard Nixon. Just two weeks before the 1972 election, he sent a letter to more than 24 million recipients of Social Security benefits. President Nixon’s letter read:

Higher Social Security Payments

Your social security payment has been increased by 20 percent, starting with this month’s check, by a new statute enacted by Congress and signed into law by President Richard Nixon on July 1, 1972.

The President also signed into law a provision that will allow your social security benefits to increase automatically if the cost of living goes up. Automatic benefit increases will be added to your check in future years according to the conditions set out in the law.

In other news:

President Joe Biden on Wednesday will announce $1.2 billion of student debt relief for nearly 153,000 borrowers — and he’s sending emails to make sure they know whom to thank for it.

…“Congratulations—all or a portion of your federal student loans will be forgiven because you qualify for early loan forgiveness under my Administration’s SAVE Plan,” says the email message from Biden that the Education Department plans to send on Wednesday to the latest group of borrowers receiving loan forgiveness.

“I hope this relief gives you a little more breathing room,” Biden writes in the message.

Note also:

…The administration says that it has now approved loan discharges totaling nearly $138 billion for nearly 3.9 million borrowers through dozens of administrative actions since coming into office.

“Administrative actions,” in other words without Congress passing a law. You may recall that the Supreme Court ruled that the administration did not have the authority to cancel student debt under the HEROES Act (which it obviously didn’t). However:

Hours after the Court issued its decisions in Nebraska and Brown, the Biden Administration announced that it was beginning a regulatory process, called negotiated rulemaking, to consider providing loan cancellation under the HEA rather than the HEROES Act.

Addendum: Do also read my previous post where I noted “…the student loan program, as currently written, is looking to be one of the most costly, inefficient and unwise government programs of the 21st century.”

Random Admissions Above the Bar

Jon Klick, Professor of Law at the University of Pennsylvania Carey Law School (and a distinguished GMU econ grad), argues that Penn should “abandon the fiction that holistic evaluation is anything more than a way to hide discretion.”

Instead, Penn should set a standardized test score floor and then randomly choose its admittees from the pool of applicants meeting that requirement.  That’s it; that’s the application process.  Setting a floor helps make sure the matriculating class has the requisite cognitive ability to succeed but otherwise limits concerns about ideology being privileged over academic merit.  Random selection (as opposed to just taking the highest test scores) recognizes that standardized tests may be too blunt to make fine distinctions among students and generates a campus population that approximates the population of smart young adults along many more dimensions than we currently consider.

Faculty have largely abandoned the job of admitting students to a professional class of admissions officers. A standardized test floor would simplify the process for universities and reduce the rent-seeking scramble of high-school students to add yet more extra-curricular eye-candy to their highly-crafted personal statements.

Sentences to ponder

We find that standard population growth projections imply larger reductions in [per capita] income than even the most extreme widely-adopted climate change scenario.

Note these results are referring to population growth, not shrinkage.  Of course those of you who remember Paul Ehrlich and his “population bomb” campaign may be skeptical.  Still, if you think there are countries or regions that are just not going to grow much in absolute terms, exactly why is this wrong?  Ehrlich was clearly wrong about countries that were set to grow — is that everyone?

Should per capita or total income be the standard here?

That sentence is from a macroeconomics paper, here is more, via Robin Hanson.

Give Innovation a Chance

Elizabeth Currid-Halkett writing in the NYTimes discusses her son’s muscular dystrophy and his treatment with the controversial gene-therapy Elevidys. Currid-Halkett, like many parents whose children have been treated with Elevidys, reports much better results than appear in the statistics.

On Aug. 29, [my son] finally received the one-time infusion. Three weeks later, he was marching upstairs and able to jump over and over. After four weeks, he could hop on one foot. Six weeks after treatment, Eliot’s neurologist decided to re-administer the North Star Ambulatory Assessment, used to test boys with D.M.D. on skills like balance, jumping and getting up off the floor unassisted. In June, Eliot’s score was a 22 out of 34. In the second week of October, it was a perfect 34 — that of a typically developing, healthy 4-year-old boy. Head in my hands, I wept with joy. This was science at its very best, close to a miracle.

…a narrow focus on numbers ignores the real quality-of-life benefits doctors, patients and their families see from these treatments. During the advisory committee meeting for Elevidys in May 2023, I listened to F.D.A. analysts express skepticism about the drug after they watched videos of boys treated with Elevidys swimming and riding bikes. These experts — given the highest responsibility to evaluate treatments on behalf of others’ lives — seemed unable to see the forest for the trees as they focused on statistics versus real-life examples.

Frankly, I side with the statistics. We don’t hear from the parents in the placebo group whose children also spontaneously made improvements.

Even though I side the statistics, I side with approval. Innovation is a dynamic process. It’s not surprising that the first gene therapy for DMD offers only modest benefits; you don’t hit a home run the first time at bat. But if the therapy isn’t approved, the scientists don’t go back to the drawing board and keep going. If the therapy isn’t approved, it dies and you lose the money, experience and learning by doing that are needed to develop, refine and improve.

Approval is not the end of innovation but a stepping stone on the path of progress. Here’s an example I gave earlier of the same principle. When we banned supersonic aircraft, we lost the money, experience and learning by doing needed to develop quieter supersonic aircraft. A ban makes technological developments in the industry much slower and dependent upon exogeneous progress in other industries.

You must build to build better.

Addendum: Peter Marks is the best and perhaps the most important director CBER has ever had. CBER, the Center for Biologics Evaluation and Research, is responsible for biological products, including vaccines and gene therapies. Marks has repeatedly pushed and sometimes overruled his staff in approving products like Elevidys. Marks named and was the driving force at the FDA behind Operation Warp Speed, a tremendous FDA success and break with tradition. Marks has been challenging the FDA’s conservative culture. I hope his changes survive his tenure.