Steal My Paper Ideas!

Since early in graduate school I’ve kept a running list of ideas for economics papers I’d like to write and publish some day. I’ve written many of the papers I planned to, and been scooped on others, but the list just keeps growing. As I begin to change my priorities post-tenure, I decided it was time to publicly share many of my ideas to see if anyone else wants to run with them. So I added an ideas page to my website:

Steal My Paper Ideas! I have more ideas than time. The real problem is that publishing papers makes the list bigger, not smaller; each paper I do gives me the idea for more than one new paper. I also don’t have my own PhD students to give them to, and don’t especially need credit for more publications. So feel free to take these and run with them, just put me in the acknowledgements, and let me know when you publish so I can take the idea off this page.

Here’s one set of example ideas:

State Health Insurance Mandates: Most of my early work was on these laws, but many questions remain unanswered. States have passed over a hundred different types of mandated benefits, but the vast majority have zero papers focused on them. Many likely effects of the laws have also never been studied for any mandate or combination of mandates. Do they actually reduce uncompensated hospital care, as Summers (1989) predicts? Do mandates cause higher deductibles and copays, less coverage of non-mandated care, or narrower networks? How do mandates affect the income and employment of relevant providers? Can mandates be used as an instrument to determine the effectiveness of a treatment? On the identification side, redoing older papers using a dataset like MEPS-IC where self-insured firms can be used as a control would be a major advance.

You can find more ideas on the full page; I plan to update to add more ideas as I have them and to remove ideas once someone writes the paper.

Thanks to a conversation with Jojo Lee for the idea of publicly posting my paper ideas. I especially encourage people to share this list with early-stage PhD students. It would also be great to see other tenured professors post the ideas they have no immediate plans to work on; I’m sure plenty of people are sitting on better ideas than mine with no plans to actually act on them.

Waxing Crescent: New Orleans 2013-2023

The scars of Hurricane Katrina were still obvious eight years afterward when I moved to New Orleans in 2013. Where I lived in Mid-City, it seemed like every block had an abandoned house or an empty lot, and the poorer neighborhoods had more than one per block. Even many larger buildings were left abandoned, including high-rises.

Since then, recovery has continued at a steady pace. The rebuilding was especially noticeable when I spent a few days there recently for the first time since moving away in 2017. The airport has been redone, with shining new connected terminals and new shops. The abandoned high-rise at the prime location where Canal St meets the Mississippi has been renovated into a Four Seasons. Tulane Ave is now home to a nearly mile-long medical complex, stretching from the old Tulane hospital to the new VA and University Medical Center complex. There are several new mid-sized health care facilities, but most striking is that Tulane claims to finally be renovating the huge abandoned Charity Hospital:

Old Charity Hospital, January 2023

The new VA hospital opened in 2016 as mostly new construction, but they’ve now managed to fully incorporate the remnants of the abandoned Dixie Beer brewery:

VA Hospital incorporating old Dixie Beer tower, January 2023

Dixie beer itself opened a new beer garden in New Orleans East, and just renamed itself Faubourg Brewery. Some streets named for Confederates have also been renamed, though you can still see plenty of signs of the past, like the “Jeff Davis Properties” building on the street renamed from Jefferson Davis Parkway to Norman C Francis Parkway.

Other big additions I noticed are the new Childrens’ Museum and the greatly expanded sculpture garden in City Park:

Of course, even with all the improvements, many problems remain, both in terms of things that still haven’t recovered from the hurricane, and the kind of problems that were there even before Katrina. The one remaining abandoned high-rise, Plaza Tower, was actually abandoned even before Katrina.

My overall impression is that large institutions (university medical centers, the VA, the airport, museums, major hotels) have been driving this phase of the recovery. The neighborhoods are also recovering, but more slowly, particularly small business. Population is still well below 2005 levels. I generally think inequality has been overrated in national discussions of the last 15 years relative to concerns about poverty and overall prosperity, but even to me New Orleans is a strikingly unequal city; there’s so much wealth alongside so many people seeming to get very little benefit from it.

The most persistent problems are the ones that remain from before Katrina: the roads, the schools, and the crime; taken together, the dysfunctional public sector. Everywhere I’ve lived people complain about the roads, but I’ve lived a lot of places and New Orleans roads were objectively the worst, even in the nice parts of town, and it isn’t close. The New Orleans Police Department is still subject to a federal consent decree, as it has been since 2012. The murder rate in 2022 was the highest in the nation. Building an effective public sector seems to be much harder than rebuilding from a hurricane.

As much as things have changed since 2013, my overall assessment of the city remains the same: its unlike anywhere else in America. It is unparalleled in both its strengths and its weaknesses. If you care about food, drink, music, and having a good time, its the place to be. If you’re more focused more on career, health, or safety, it isn’t. People who fled Katrina and stayed in other cities like Houston or Atlanta wound up richer and healthier. But not necessarily happier.

Highlights from ASSA 2023

I expected the meetings would shrink, but I was still surprised by how much they did:

That said, I mostly didn’t notice the smaller numbers on the ground, because most of the missing people are those on the job market, who used to spend most of their time shut away doing interviews anyway. There was still a huge variety of sessions and most seemed well-attended. ASSAs is also still unparalleled for pulling in top names to give talks; I got to talk to Nobel laureate Roger Myerson at a reception. But there may be a trend of the big names being more likely to stay remote:

The big problem with attendance falling to 6k is that they’ve planned years worth of meetings with the assumption of 12k+ attendance. Getting one year further from Covid and dropping mask and vaccine mandates might help some, but the core issue is that 1st-round job interviews have gone remote and aren’t coming back. The best solution I can think of is raising the acceptance rate for papers, which in recent history has been well under 20%.

In terms of the actual economic research, two sessions stood out to me:

How many factors are there in the stock market? Classic work by Fama and French argues for 3 (size, value, and market risk), but the finance literature as a whole has identified a “zoo” of over 500. Two papers presented one after the other at ASSA argued for two extremes. “Time Series Variation in the Factor Zoo” argues that the number of factors varies over time, but is quite high, typically over 20 and sometimes over 100:

In contrast, “Three Common Factors” argues that there really are just 3 factors, though they are latent and not the same as the Fama-French 3 factors. In this case, the whole zoo of factors in the literature is mostly non-robust results driven by p-hacking and a desire to find more factors (fortune and fame potentially await those who do). Overall these asset pricing papers make me want to look into all this myself; when reading them I’m always struck by an odd mix of reactions- “I don’t understand that”, “why would you do it that way, it seems wrong and unnecessarily complicated”, and “why didn’t the field settle such a seemingly basic question decades ago?”.

Hayek: A Life this session covered the new book by Bruce Caldwell (who taught me much of what I know of the history of economic thought) and Hansjoerg Klausinger. Discussants Emily Skarbek and Stephen Durlauf agreed it is surprisingly readable for a long work of original scholarship, calling it a beautifully written 800p pageturner. Vernon Smith asked Caldwell if Hayek read the Theory of Moral Sentiments. Caldwell: “he cited it.” Smith: “but did he read it? Seems like he didn’t understand it very well.” Caldwell agreed he may not have, or if he did it was a German translation.

Vernon Smith’s own talk featured great comments on market instability: instability in markets comes from retrading. Markets are stable when consumers just value goods for their use, like haircuts and hamburgers. The craziness and potential for bubbles and crashes comes in when people are thinking about reselling something, whether it be tulips, stocks, houses, or crypto.

I asked Bruce Caldwell at a reception how he was able to finish writing such a big book that involved lots of archival work and original research. He said “one chapter at a time”, and noted that its fine to write the easiest chapters first to get the ball rolling.

Overall, while ASSA is diminished from the pre-Covid days and I often disagree with the AEAs decisions, its still a top-tier conference, especially when in New Orleans.

ASSA 2023: New Orleans!

Today the largest annual gathering of economists begins, in-person for the first time in 3 years. It won’t be as big as the pre-Covid conferences, but I’m excited to spend a few days in New Orleans for the first time since I moved away in 2017. I lived there for 4 years; in the eventful 5 years since my knowledge likely became somewhat out of date, but I hope I can still provide some guidance for those new to the city.

For most people the main destination is the French Quarter. People are right about this; it is great to walk through to see the old colonial buildings, hear the street music, and eat the food. Some of the ASSA hotels are in the Quarter, but for those staying downtown or in the Warehouse district its definitely worth the walk. The Quarter is a big, diverse place, not only for tourists. Bourbon Street is the tourist trap. It is probably worth seeing once, but be prepared for crowds, loud music, and touts trying to get you into bars and strip clubs. The standard advice now is to skip Bourbon St and hang out on Frenchman street instead- which is in the Marigny, just east of the Quarter. There are two blocks entirely packed with bars / jazz clubs. Any evening you will have at least 5 shows to choose from, usually jazz, usually with no cover. Café du Monde is the other Quarter attraction that everyone does, and with good reason. They have decent coffee, and great beignets (a donut / fried dough sort of thing drowned in powdered sugar). There is often a long line to get a table or to get to-go, but usually not for both at once. There is a river walk just south of Café Du Monde, and the Jackson Brewery building is just east- there is a good place to sit and look at the river beside their food court.

In a short trip it would be entirely reasonable to just stay in the Quarter. But if you’d like to get out, the main attraction of New Orleans to me is the parks. Audobon Park is west of the Quarter in Uptown. It stretches from the Mississippi river to the Tulane and Loyola campuses. City Park is north of the Quarter in Mid-City, and is home to the Art Museum and Sculpture Garden. Both can be reached by trolley, and both are full of lovely ponds and interesting waterfowl. At the big lake in city park you can rent kayaks, or get a ride in a gondola.

People associate New Orleans with Cajun food, but most of the Cajuns settled to the west. The traditional New Orleans cuisine is Creole- a blend of the Italian, French, and other settlers. When I think about what makes restaurants attractive, I think about three things- food, prices, and everything else (service, wait times, ambience). In New Orleans it is very easy to find places with great food at good prices, but rare to find good places that also have short wait times and good service (Commander’s Palace, the best restaurant in the city, is already booked solid). My restaurant recommendations are the thing most likely to be out of date, so I’ll keep it short:

  • Central Grocery- original home of the Mufalleta, a creole sandwich. In the French quarter. 
  • Dat Dog- fancy hot dogs (mostly sausages) with more toppings than you could ever want to choose from (including crawfish etouffee). One location is on Frenchman St- you can often hear live jazz from the bars by while sitting on their balcony. Cheap.
  • Hotel Monteleone- classy bar, often with live jazz, home to the rotating Carousel bar. One of many good places to try old New Orleans cocktails like the Sazerac. I’ll be staying here trying to get a spot on the Carousel.

New Orleans is unlike anywhere else in the US, almost like a Caribbean island (it practically is an island, surrounded by lakes, rivers, and swamps). The highs (food, music, knowing how to have a good time) are higher than just about anywhere else here, though the lows are also lower. One of the most special things about it is Mardi Gras. Mardi Gras day isn’t until February 21st this year, but Mardi Gras is really a whole season in New Orleans- and the first parade, Krewe of Joan of Arc, starts right in the Quarter on Friday January 6th (Twelfth Night).

Enjoy the city, and let me know if you’d like to meet up.

Most Improved Data

The US government is great at collecting data, but not so good at sharing it in easy-to-use ways. When people try to access these datasets they either get discouraged and give up, or spend hours getting the data into a usable form. One of the crazy things about this is all the duplicated effort- hundreds of people might end up spending hours cleaning the data in mostly the same way. Ideally the government would just post a better version of the data on their official page. But barring that, researchers and other “data heroes” can provide a huge public service by publicly posting datasets that they have already cleaned up- and some have done so.

I just added a data page to my website that highlights some of these “most improved datasets”:

  • the IPUMS versions of the American Community Survey, Current Population Survey, and Medical Expenditure Panel Survey
  • The County Business Patterns Database, harmonized by Fabian Eckert, Teresa C. Fort, Peter K. Schott, and Natalie J. Yang
  • Code for accessing the Quarterly Census of Employment and Wages by Gabriel Chodorow-Reich
  • The merged Statistics of US Business, my own attempt to contribute

I hope to keep adding to this page as I find other good sources of unofficial/improved data, and as I create them (one of my post-tenure goals). See the page for more detail on these datasets, and comment here if you know of existing improved datasets worth adding, or if you know of needlessly terrible datasets you think someone should clean up.

College Major, Marriage, and Children Update

In a May post I described a paper my student my student had written on how college majors predict the likelihood of being married and having children later in life.

Since then I joined the paper as a coauthor and rewrote it to send to academic journals. I’m now revising it to resubmit to a journal after referee comments. The best referee suggestion was to move our huge tables to an appendix and replace them with figures. I just figured out how to do this in Stata using coefplot, and wanted to share some of the results:

Points represent marginal effects of coefficient estimates from Logit regressions estimating the effect of college major on marriage rates relative to non-college-graduates. All regressions control for sex, race, ethnicity, age, and state of residence. MarriedControls additionally controls for personal income, family income, employment status, and number of children. Married (blue points) includes all adults, others include only 40-49 year-olds. Lines through points represent 95% confidence intervals.
Points represent coefficient estimates from Poisson regressions estimating the effect of college major on the number of children in the household relative to non-college-graduates. All regressions control for sex, race, ethnicity, age, and state of residence. ChildrenControls additionally controls for personal income, family income, employment status, and number of children. Children (blue points) includes all adults, others include only 40-49 year-olds. Lines through points represent 95% confidence intervals.

Many details have changed since Hannah’s original version, and a lot depends on the exact specification used. But 3 big points from the original paper still stand:

  1. Almost all majors are more likely to be married than non-college-graduates
  2. The association of college education with childbearing is more mixed than its almost-uniformly-positive association with marriage
  3. College education is far from uniform; differences between some majors are larger than the average difference between college graduates and non-graduates

Farewell to the First Normal Semester in 3 Years

Today as I gave my last final and took my kids to a huge school party, it struck me that things are finally back to something like 2019 levels of normality.

2020 was a lost cause, of course. I had high hopes for 2021 that vaccines would immediately get us back to normal. They did get my school back to fully in-person by Fall 2021, but not really back to normal, partly thanks to the variants. My students were out sick more than normal, and I was out watching my sick kids more than normal, as every cold meant they would be home until the school was sure it wasn’t Covid. Toward the end of the Spring 2022 semester worries were subsiding, and my state was pretty much fully re-opened, but things still weren’t really back to normal. Student attendance and effort were still way below normal, partly from the lingering effects of Covid, and partly from celebrating its end- partying to make up for lost time (and cheering on a great basketball team).

Fall 2022 finally felt like a basically normal semester. I still see the occasional mask, still hear from the occasional student out with Covid, and still have one kid missing 2 school days with every cough (policies stricter than 2019, but much relaxed from the days when both kids were at schools that could have them miss 5+ days with every non-Covid cough). Overall though student attendance and effort are back to what seem like normal levels. Up to Spring 22 I’d have students just disappear for a few weeks, not in class, not answering e-mails about why they weren’t showing up or completing work, needing lots of help to get on track once they finally reappeared. This Fall that didn’t happen; in my Senior Capstone everyone turned in a quality paper basically on-time and without me having to chase anyone down for it. Also, everyone just seemed happier now that their stress levels are back down to the baseline for college students.

This semester was nothing special- and that was beautiful.

Sympathy for the Sauds

I’ve always been confused by the US alliance with Saudi Arabia. Its a state with values abhorrent to many Americans, and it seems like we don’t get much practical value out of the alliance.

This essay on Saudi history, politics, and economics by Matt Lakeman makes the situation more comprehensible. I still don’t know that I want the alliance, but I can now see how so many US presidents have continued with it without necessarily being stupid, crazy, or corrupt. In short, they think that most of the realistic alternatives are worse. Some highlights:

Before starting this research, I had the same perception as Wood that the Saudi economy is essentially what he calls a “petrol-rentier state.” Basically, Saudi Arabia sits on top of a giant ocean of easily-accessed oil which they suck out of the ground and sell at enormous profit to prop up the rest of their extremely inefficient economy and buy the loyalty of their own people and foreign powers. Saudi Arabia is the wealthiest large state in the Middle East today by sheer virtue of geographic luck rather than any innovation or business acumen on the part of its people.

And after doing my research, all of the above is… basically true.

But all of that should also be true of Iran, Iraq, Venezuela, Libya, and a few other countries which are also situated on giant oceans of oil but are far poorer than Saudi Arabia.

Economically, Saudi Arabia deserves little credit for its success. Politically, Saudi Arabia deserves a tremendous amount of credit for enabling its economic success. 

Dealing with the resource curse is always challenging, and foreign ownership is an additional challenge. How did they manage it?

the Sauds struck a clever balance between being too aggressive and too placating of the foreigners operating their oil wells. If the Saudi state had been aggressive and tried to nationalize its oil quickly, Saudi Arabia could have ended up becoming another Venezuela or Iran with lots of external political pressure from hostile Western countries and a low-efficiency oil industry. But if they had nationalized too late, they would have ended up like a lot of African nations who have all their natural wealth siphoned away by foreigners.

Instead, the Sauds executed a patient, and most importantly, amicable assertion of power over Aramco, which did not become fully owned by Saudis until 1974. At the very start of Aramco, the company was entirely owned and operated by Americans aside from menial labor. However, the Saudi government inserted a clause into their contract with the corporation requiring the American oil men to train Saudi citizens for management and engineering jobs. The Americans held up their end of the bargain, and over time, more and more Saudis took over management and technical positions.

In addition to carefully negotiating the balance of power with various foreigners, the Sauds have done so with the religious establishment:

Though the monarch has absolute power, his authority is at least in part derived from Saudi Arabia’s Islamic religious establishment. The ulema (a group of the highest-ranking clerics) is officially integrated into the government, and plays an important role in legal matters. However, the religious establishment has slowly been marginalized by the monarchy over the last few decades, and has possibly been subjugated entirely since the reform era began five years ago.

Winning freedom of action has been a long road with many setbacks:

[King] Abdulaziz constantly had to reassure enraged Wahhabi clerics that he wasn’t selling out the Arab homeland to treacherous infidels. IIRC, it was some time in the 1920s that Abdulaziz had to publicly smash a telegraph to prove to the clerics that he wasn’t bewitched by infidel technology.

In late 1979, 400-500 extremist Sunni Saudis seized the Grand Mosque in Mecca (the holiest Islamic site on earth) and demanded the overthrow of the Saud dynasty in favor of a theocratic state meant to await an imminent apocalypse. They held on for two weeks while managing to fight off waves of Saudi police and military squads. Eventually, three French commandos flew to Mecca, converted to Islam in a hotel room, and led a successful assault to retake the Mosque. Over 100 men died on each side, with hundreds more wounded.

The Grand Mosque seizure was the final wake-up call for the Saud dynasty. Something drastic had to be done or their regime would likely be ground down under mounting internal and external pressure…. King Khalid led a social/religious/political reactionary revolution within Saudi Arabia to align with the Sunni extremists. Up until about four years ago, Saudi society was still gender segregated and enforced a largely literalist interpretation of Sharia, hence the array of bizarre and antiquated laws – gender segregation in public, requiring women to cover their faces, outlawing of non-Muslim religious buildings (there are a few Shia mosques), restrictions on foreign media, etc. Saudi Arabia was always conservative, but most of these draconian laws were only put into place in the 1980s. The Saud dynasty purposefully induced a reactionary legal regime and pulled Saudi Arabia further away from liberalism.

The charitable take on making an already oppressive regime even more oppressive is that the Sauds were trying to bend Saudi Arabia to the extremists so the country would not break. And by all accounts, it worked; the conservative Wahhabi clerics backed by the Saud dynasty placated a sizeable portion of the Sunni extremists inside and outside of Saudi Arabia, and they became a pool of support against the Shia and Baathists. Saudi Arabia was certainly made a worse country for its citizens, but that was the price to pay for averting civil war.

More recently, Crown Prince Salman has consolidated power to the point where he can make modernizing reforms that Wahhabis might have opposed, like allowing women to drive, allowing non-Muslim foreigners to to get tourist visas, allowing music concerts, et c. Lakeman obviously likes these reforms, but at the same time worries that the concentrated power that so far Salman has largely used to enact positive reforms could be abused going forward, and on a larger scale than murdering the occasional dissident.

Wood argues that a worst case scenario parallel to MBS is Syrian Dictator Bashar al-Assad. Like MBS, there were high hopes that Assad would be a liberal reformer when he took over Syria. After all, Assad had been living and working in the UK as an ophthalmologist with no political aspirations, and was known to be a fan of Phil Collins. He was called to the throne after the unexpected death of his older brother, and so the West hoped that this nerdy British doctor would bring upper-middle class liberal values to Syria. Instead, Assad became one of the worst dictators of the modern Middle East, probably second only to Saddam Hussein.

I recommend reading the whole thing, here I’m quoting relatively small parts of an article full of interesting detail on the history, economics, and politics of Saudi Arabia. There’s also a section on visiting:

The silver lining to Saudi Arabia’s lack of tourism is that there aren’t many tourist restrictions. I went to two ancient settlements and I found no guards, no gates, no notices at all. I walked in, around, and on top of 2,000 year old houses, and I honestly have no idea if I was allowed to.

Ban, Subsidize, Mandate: Ethics and US Healthcare Policy

Tomorrow (Friday 12/2) I’ll be speaking at the Fall Ethics Forum at Sacramento State. The Center for Practical and Professional Ethics there does a forum every year on a different field of practical ethics, and this year they chose healthcare (some previous iterations look quite interesting, like Bryan Caplan on education and Lyman Stone on population). The event is open to the public if you happen to live near Sacramento, and I hope to be able to post a recording later. But for now, here’s a short preview of what I plan to say:

In many key respects, US health policy is about restricting the choices available to patients and health care providers: banning things the government doesn’t want, while mandating or subsidizing things they want. These restrictions on autonomy are typically justified by the idea that they lead to superior health or economic outcomes. In some cases this tradeoff between freedom and efficient utilitarian outcomes is real, but I highlight some policies such as Certificate of Need laws that appear to harm both freedom and efficiency. I argue that the overarching US approach to health policy is to subsidize demand while restricting supply, which together lead to exceptionally high prices but mediocre health outcomes.

I’ll also take on some classic questions like: when are free lunches truly free? And when is moral hazard really immoral?