Monday, June 6, 2022

A beachfront lot for you in the metaverse--or maybe an experimental lab

 With Facebook transforming itself into Meta, we're starting to hear a lot about the metaverse, a term that may have been coined by Neal Stephenson in the novel Snowcrash.

Scott Kominers, who recently signed on to an Andreessen Horowitz ("a16z" for short) expedition to the metaverse, offers this view of why you might want to set up shop there yourself sometime:

Metaverse Land: What Makes Digital Real Estate Valuable by Scott Duke Kominers

 Reading it, I realized that I had something of an early metaverse experience, involving an experiment in May 2008 in Second Life, eventually memorialized in a paper in a special issue of JEBO in honor of Werner Güth:

Greiner, Ben, Mary Caravella, and Alvin E. Roth. "Is avatar-to-avatar communication as effective as face-to-face communication? An Ultimatum Game experiment in First and Second Life." Journal of Economic Behavior & Organization 108 (2014): 374-382. 

We needed a metaverse laboratory in Second Life, and in order for us to be able to control communication between subjects, they each had to be teleported to a room more than a mile distant from anyone else (so that they would be beyond the range of Second Life chat tools). So our lab was an unusual bit of metaverse real estate: a tower of laboratory rooms floating above our island, each a mile above the room below it. (Construction in the metaverse is more flexible than in the physical universe.) Here's the description from the paper:

"Within Second Life, the sessions took place on an “island” under our control. We restricted access to the island to those participants’ avatars who had signed up to the session. Participants were received in a virtual laboratory building, the interior of which closely resembled the CLER layout (see screenshot 1 in Appendix B). They received a Linden$400 showup-fee, plus their income from the Ultimatum Game. At the beginning, participants received general instructions and were randomly matched to pairs and roles. In the no-communication treatment SL-NC, participants were teleported to private “decision rooms” (distant enough from each other to prevent any chat communication) and made their choices. In the avatar-to-avatar communication treatment SL-A2A, participants were first teleported in pairs to “discussion rooms” (see screenshot 2 in Appendix B) where they were free to discuss any topic for 5 min, before being teleported to their private decision room. In their decision room, participants received instructions on the Ultimatum Game. Decisions were made on an interactive wall in the decision room, which resembled the zTree input mask used in the laboratory sessions (see screenshot 3 in Appendix B). After all decisions were made, participants were informed of their payoffs and paid in Linden$ via the Second Life money transfer mechanism."


Sunday, June 5, 2022

Econometric Society Summer School in Dynamic Structural Econometrics: Market Design

Market design isn't just about game theory these days:

Econometric Society Summer School in Dynamic Structural Econometrics: Market Design, Massachusetts Institute of Technology, August 15-20, 2022

Lecturers of the summer school and invited conference speakers include:

Nikhil Agarwal, Massachusetts Institute of Technology

Irene Lo, Stanford University

Victoria Marone, University of Texas at Austin

Robert A. Miller, Carnegie Mellon University

Whitney Newey, Massachusetts Institute of Technology

Advisory board: 

Ariel Pakes, Harvard University

Parag Pathak, Massachusetts Institute of Technology

Paulo Somaini, Stanford Graduate School of Business

Daniel Waldinger, New York University

2022 organizers: 

Nikhil Agarwal, Massachusetts Institute of Technology

Whitney Newey, Massachusetts Institute of Technology

Saturday, June 4, 2022

NBER workshop on market design: Stanford November 4-5

 Here's an announcement that arrived by email:

To: NBER Market Design Working Group

From: Eric Budish, Jakub Kastl, and Marzena Rostek

 The National Bureau of Economic Research workshop on Market Design is a forum to discuss new academic research related to the design of market institutions, broadly defined. The next meeting will be held in Stanford, CA on November 4 & 5, 2022.

 We welcome new and interesting research and are happy to see papers from a variety of fields. Participants in the past meeting covered a range of topics and methodological approaches. Last year's program can be viewed at:

https://conference.nber.org/altsched/MDf21

 The conference does not publish proceedings or issue NBER working papers - most of the presented papers are presumed to be published later in journals.

 There is no requirement to be an NBER-affiliated researcher to participate.

Younger researchers, and researchers who are members of historically under-represented groups, are especially encouraged to submit papers.

 If you are interested in presenting a paper this year, please upload a PDF version by midnight EDT on August 1, 2022, to this link:

http://conference.nber.org/confsubmit/backend/cfp?id=MDf22

 Preference will be given to papers for which at least a preliminary draft is ready by the time of submission. Only authors of accepted papers will be contacted.

 For presenters in North America, the NBER will cover the travel and hotel costs. For speakers from outside North America, while the NBER will not be able to cover the airfare, it can provide support for hotel accommodation.

 There are a limited number of spaces available for graduate students to attend the conference, though we cannot cover their costs. Please email jkastl@princeton.edu a short nominating paragraph.

 Please forward this announcement to any potentially interested scholars. We look forward to hearing from you.

 


Friday, June 3, 2022

Organ transplants and capital punishment don't go well together

 I recently blogged about a paper by Robertson and Lavee in the American Journal of Transplantation, looking at surgeries conducted in China before 2015, a period in which China acknowledged that most transplants there were conducted with organs from executed prisoners.  Now they summarize their report in a column in the WSJ.

In China, New Evidence That Surgeons Became Executioners. Clinical reports recount scores of cases in which organ donors were alive when operations began.  By Jacob Lavee and Matthew P. Robertson

"The Wuhan doctors write: “When the chest of the donor was opened, the chest wall incision was pale and bloodless, and the heart was purple and beating weakly. But the heartbeat became strong immediately after tracheal intubation and oxygenation. The donor heart was extracted with an incision from the 4th intercostal sternum into the chest. . . . This incision is a good choice for field operation where the sternum cannot be sawed open without power.”

"By casually noting that the donor was connected to a ventilator (“tracheal intubation”) only at midsurgery, the physicians inadvertently reveal that the donor was alive when the operation began.

...

"Our findings end in 2015, but we think the abuse likely continues. Medical papers like those we studied were first unearthed by Chinese grass-roots investigators in late 2014, and it would have been simple to command journals to stop publishing the incriminating details after that. While China claims to have stopped using prisoners in 2015, our previous research raises doubts. In a 2019 paper in the journal BMC Medical Ethics, we used statistical forensics to show that the official voluntary-organ donation numbers were falsified, inflating the success of a modest voluntary organ-donation reform program used to buttress the reform narrative.

"Global medical leaders have largely dismissed such concerns. The World Health Organization took advice from Chinese transplant surgeons in the establishment of its anti-organ-trafficking task force—and then installed them on the membership committee. In 2020, WHO officials joined long-time apologists for China’s transplant system, attacking our previous research showing falsified numbers."

...

"Dr. Lavee is the director of the Heart Transplantation Unit at Tel Aviv’s Sheba Medical Center and a professor of surgery at Tel Aviv University. Mr. Robertson is a research fellow with the Victims of Communism Memorial Foundation and a doctoral candidate in political science at the Australian National University."

Thursday, June 2, 2022

Stanford Economics Site Conferences 2022

Here's the full set of sessions for this summer: 

Program Overview

Wednesday, June 1, 2022

Health data and privacy, in a world of overlapping data

 Re-identifying de-identified data, by combining it with other data sets, sometimes provides a way of legally circumventing medical privacy laws such as HIPAA.  Data re-identification isn't illegal.

Here's a story from Stat:

 Top privacy researchers urge the health care industry to safeguard patient data. By Megan Molteni 

"As a STAT investigation published Monday revealed, data brokers are quietly trafficking in Americans’ health information — often without their knowledge or consent, and beyond the reach of federal health privacy laws. This market in medical records has become highly lucrative  — $13.5 billion annually —  thanks to advances in artificial intelligence that enable the slicing, dicing, and cross-referencing of that data in powerful new ways.

"But the building of these algorithms often sidelines patient privacy. And researchers who’ve been tracking these erosive effects say it’s time to reform how health data is governed and give patients back control of their information.

...

"One of the most frequent harms he and other researchers have chronicled: Patients being denied care or insurance coverage based on information payers drew from their social media activities after combining datasets to re-identify them. 

Tuesday, May 31, 2022

Food fight in California: Foie gras is legal for private consumption from out of state providers

 The Ninth Circuit has confirmed a nuanced lower court verdict about foie gras, in the latest episode of a long running California food fight about gavage, the force feeding of ducks:

California court okays import of foie gras from out of state, barred in 2012. The law, passed in 2004, went into effect in 2012 and banned the sale of the delicacy if produced by force feeding geese or ducks.

"A California law that effectively bans foie gras sales in the state was limited in part on Friday. Californians can continue purchasing the controversial pate from out-of-state retailers, the ninth circuit court of appeals said in a ruling.

"The law, which passed in 2004 and went into effect in 2012, bars the sale of foie gras if produced by force feeding geese or ducks, according to Courthouse News Service. As the mousse is traditionally produced from the engorged livers of force-fed geese and ducks, the legislation is a near-prohibition.

"The ninth circuit’s decision upheld a lower court’s 2020 ruling, which also permitted the shipping of out-of-state foie gras through third-party delivery companies, according to the Associated Press."

"This ruling is only applicable to people who purchase foie gras for their individual use; California law still bars retailers and restaurants from selling or giving away foie gras. The law has been challenged repeatedly since its enactment."

Monday, May 30, 2022

Eliminating cruelty (and methane) from the food chain: lab-grown ("no-kill") meat

 The Guardian has the story:

World’s largest vats for growing ‘no-kill’ meat to be built in US by Damian Carrington

"The building of the world’s largest bioreactors to produce cultivated meat has been announced, with the potential to supply tens of thousands of shops and restaurants. Experts said the move could be a “gamechanger” for the nascent industry.

"The US company Good Meat said the bioreactors would grow more than 13,000 tonnes of chicken and beef a year. It will use cells taken from cell banks or eggs, so the meat will not require the slaughter of any livestock.

"There are about 170 companies around the world working on cultured meat, but Good Meat is the only company to have gained regulatory approval to sell its product to the public. It began serving cultivated chicken in Singapore in December 2020.

...

"“I think our grandchildren are going to ask us about why we ate meat from slaughtered animals back in 2022,” said Josh Tetrick, the chief executive of Good Meat’s parent company, Eat Just.

“Cultivated meat matters because it will enable us to eat meat without all the harm, without bulldozing forests, without the need to slaughter an animal, without the need to use antibiotics, without accelerating zoonotic diseases.

...

"Cultivated meat has not yet been approved for sale by the US Food and Drug Administration. 

...

"Another cultivated meat company, Upside Foods, raised $400m in April, in part to fund a commercial-scale facility to produce thousands of tonnes of meat a year.

...

"Other companies with facilities for cultivated meat include SuperMeatMosa MeatFuture Meat Technologies and the seafood producers Wildtype and Shiok Meats. There are also many companies making plant-based meat replacements."

Sunday, May 29, 2022

Tipping in taxis

 The WSJ writes about a working paper about tipping in taxis by my Stanford GSB colleague (and taxi driver emeritus) Kwabena Donkor.

Here's the WSJ article:

When Given a Menu of Tipping Options, People Tip More  By Lisa Ward

"People tend to use tip menus as a reference point or anchor, interpreting the options as indicators of what they should actually tip, says Kwabena Donkor, an assistant professor at Stanford University’s School of Business, the paper’s author and a former New York City taxi driver.

"The study found that 58% of riders chose to use the taxi cabs’ tip menus, though riders tended to opt out of using the menu when the calculations were easiest."

********

And here's the working paper:

The Economic Value of Norm Conformity andMenu-Opt-Out Costs

Kwabena Donkor, Stanford GSB December, 2021

"Abstract: This paper theoretically and empirically analyzes trade-offs between consumption versus norm-adherence and choosing from a menu of default options versus computing a non-default choice. In the theoretical model, peoples’ choices depend on consumption, norm conformity, and menu-opt-out costs. Using passengers’ tips sampled from a billion NYC taxi rides, I empirically estimate the model parameters.I find that the cost of deviating from the norm tip and opting out of the default tip menu are both high relative to the taxi fare. I then examine the welfare implications of norm conformityand the positive and normative effects of default menu design."

Saturday, May 28, 2022

EU purchases of Russian natural gas: some market design thoughts

 Coordinated action might help the EU curb how much it spends on Russian natural gas. Here are some thoughts by Cramton, Lévêque, Ockenfels and Stoft, in Vox.eu (followed by a Financial Times editorial):

An EU gas-purchasing cartel framework  by Peter Cramton, François Lévêque, Axel Ockenfels, and Steven Stoft  26 May 2022

“Instead of outbidding each other and driving prices up,” on 25 March, the 27 EU nations decided to “pool [their] purchasing power” for the “voluntary common purchase of gas”. In short, they decided to form a buyers’ cartel. So far, difficulties have been identified, but what is needed is a systematic design effort addressing those difficulties. This column proposes a simple, but fairly comprehensive framework for an EU gas-purchasing cartel."

...

"While a tariff on Russian gas is justified and can avoid the severe consequences of an outright ban, it would be best implemented as part of a gas-purchasing cartel that could also organise a quick and vigorous response in the form of a price ultimatum.

...

"Although only one piece of a responsible plan, a gas-purchasing cartel could play an essential role in protecting EU economies from Russian blackmail and also in helping to keep the EU unified as Putin tries to fracture it, as he is attempting to do (WSJ Editors 2022). Its twin goals would be reducing the EU’s financial support for Russia’s Ukraine invasion and reducing Putin’s ability to hold EU economies hostage to Russian gas supplies. It could do this in two steps.

"1. A quick-start Russian price ultimatum with some part (up to 100%) of the price reduction placed in an escrow account. 

"2. Collective purchasing of additional gas from all sources but with targeted tariffs (leaving non-Russian long-term contracts undisturbed).

"Behind the cost-benefit justification for an EU cartel lies a strategic vision recognising the benefits of credible, step-by-step reductions in Russia’s energy revenues until the conflict is resolved (Eichstädt 2022). This is only possible with the coordination that comes with some form of buyer’s cartel."

*********

And here's the FT editorial:

A tariff on Russian oil could pave the way to an embargo. The best way to squeeze Moscow’s war machine is to deprive it of energy profits

"The EU’s economy commissioner Valdis Dombrovskis this week summed up the dilemma as the bloc struggles to agree on an embargo on Russian oil. “We are discussing massive financial support to Ukraine on one hand, and continue to provide financing for Russia’s war on the other hand,” he said. “It needs to be stopped.” A ban on Russian imports should remain the priority. But an interim measure designed to stem Moscow’s profits from energy sales more quickly — a punitive EU tariff on Russian oil, proposed by the US and others — is worth looking at too.

"An embargo choking off the 3.4mn barrels a day of oil and oil products that Russia exports to the EU would be a stunning blow to its revenues. But an EU embargo is vigorously opposed by landlocked Hungary, which says it is less able than coastal states to source alternative oil, and its refineries are set up to process Russian crude so require costly conversion. Bringing Budapest round is likely to need financial support and a phase-in period for an embargo.

...

"After a meeting with US President Joe Biden this month, Mario Draghi, Italy’s premier, mooted a global “buyers’ cartel” that would attempt to reduce global oil prices."

Friday, May 27, 2022

Personal data as a national (not international) resource

 The NY Times has the story:

The Era of Borderless Data Is Ending. Nations are accelerating efforts to control data produced within their perimeters, disrupting the flow of what has become a kind of digital currency.  By David McCabe and Adam Satariano

"France, Austria, South Africa and more than 50 other countries are accelerating efforts to control the digital information produced by their citizens, government agencies and corporations. Driven by security and privacy concerns, as well as economic interests and authoritarian and nationalistic urges, governments are increasingly setting rules and standards about how data can and cannot move around the globe. The goal is to gain “digital sovereignty.”

...

"In Washington, the Biden administration is circulating an early draft of an executive order meant to stop rivals like China from gaining access to American data.

"In the European Union, judges and policymakers are pushing efforts to guard information generated within the 27-nation bloc, including tougher online privacy requirements and rules for artificial intelligence.

"In India, lawmakers are moving to pass a law that would limit what data could leave the nation of almost 1.4 billion people.

"The number of laws, regulations and government policies that require digital information to be stored in a specific country more than doubled to 144 from 2017 to 2021, according to the Information Technology and Innovation Foundation.

"While countries like China have long cordoned off their digital ecosystems, the imposition of more national rules on information flows is a fundamental shift in the democratic world and alters how the internet has operated since it became widely commercialized in the 1990s.


Thursday, May 26, 2022

Displaced people passes 100,000,000

 The Guardian has the story, focusing on the causes of displacement. But efficiently matching diverse refugees to places of temporary or permanent asylum is still one of the biggest unsolved matching problems.

Number of displaced people passes 100m for the first time, says UN. ‘Staggering milestone’ calls for urgent international action to address underlying causes of conflict, persecution and the climate crisis, says high commissioner for refugees.  by Diane Taylor

"The UN refugee agency (UNHCR) has said the global number of forcibly displaced people has passed 100 million for the first time, describing it as a “staggering milestone”.

"The UN high commissioner for refugees, Filippo Grandi, said the grim new statistic should act as a wake-up call for the international community and that more action is needed internationally to address the root causes of forced displacement around the world.

...

"The figure hit 90 million at the end of 2021, propelled by a range of conflicts including in Afghanistan, Burkina Faso, the Democratic Republic of the Congo, Ethiopia, Myanmar and Nigeria.

"Eight million Ukrainian people have been displaced within their home country as a result of the war, along with more than six million refugee movements registered from Ukraine.

“The international response to people fleeing war in Ukraine has been overwhelmingly positive,” said Grandi. “Compassion is alive and we need similar mobilisation for all crises around the world. But ultimately humanitarian aid is a palliative, not a cure. To reverse this trend the only answer is peace and stability so that innocent people are not forced to gamble between acute danger at home or precarious flight or exile.”

"The term “displaced person” was first used during the second world war, in which more than 40 million people were forcibly displaced."

Wednesday, May 25, 2022

Matching prisoners to jails: peer effects are of first order importance

 Akhil Vohra points me to this very interesting matching problem, which is apparently quite far from a good solution:

RIKERS ISLAND: City Jails Scrap Last Remnants of Pricey Consultant Plan as Deaths Mount BY  REUVEN BLAU, May 18, The City

"In 2018, the city Department of Correction began using a new detainee classification process created at great expense by consulting group McKinsey & Company. 

"The de Blasio administration had paid the white-shoe firm $27.5 million to create the system that used an algorithm based on a host of factors — including age, possible gang affiliation, and any prior history in jail — to determine where to house people behind bars with the least risk for confrontation

"On Tuesday, jail Commissioner Louis Molina announced that the pricey system — widely criticized for failing to reduce violence — will be formally scrapped after just four years as part of the department’s court-mandated overhaul plan. 

...

"jail officials have long struggled where to place new detainees to reduce the likelihood of fights. Top jail supervisors have traditionally tried to avoid creating housing units based on gang affiliation, according to current and former jail insiders. 

"Units made up of just one gang tend to get along with each other but also have the ability to gang up on the officers in the area and are more likely to join forces to ignore basic orders, jail experts say. 

"Housing units mixed with people from at least two different gangs as well as some people who are totally unaffiliated are considered the golden standard, according to criminologists. 

"But other factors are also important such as a person’s prior criminal history, age, and possible previous record in jail. 

...

"“It’s a revolving door of stupidity and poor decisions,” one high-ranking jail official, who spoke on condition of anonymity, told THE CITY. 

“We changed from that system because it wasn’t working, now we are reverting back to it,” the jail insider said. 

...

"Jail officials said the result was part of the chaos that has led to a massive spike in the number of stabbings and slashings among detainees and assaults on staff."


Tuesday, May 24, 2022

Erling Skancke defends his dissertation

 Erling Skancke defended his dissertation last week:


Here's his job market paper:


Welfare and Strategic Externalities in Matching Markets with Interviews (Job Market Paper)
Recent debate in the medical literature has raised concerns about the pre-match interview process for residency and fellowship positions at hospitals. However, little is known about the economics of this decentralized process. In this paper, I build a game-theoretic model in which hospitals conduct costly interviews in order to learn their preferences over doctors. I show that increased interview activity by any hospital imposes an unambiguous negative welfare externality on all other hospitals. In equilibrium, both hospitals and doctors may be better off by a coordinated reduction in interview activity. The strategic externality is more subtle, and conditions are derived under which the game exhibits either strategic complementarities or substitutes. Moreover, an increase in market size may exacerbate the inefficiencies of the interview process, preventing agents from reaping the thick market benefits that would arise in the absence of the costly interviews. This effect increases participants' incentives to match outside of the centralized clearinghouse as markets become thicker, jeopardizing the long-term viability of the clearinghouse. The model also provides new insights into several market design interventions that have recently been proposed.

Congratulations, Erling! 
Welcome to the club.

Monday, May 23, 2022

Gabe Carroll and Jamie Morgenstern win the Social Choice and Welfare Prize

Congratulations to Jamie Morgenstern and Gabe Carroll. Their joint prize is a sign of how economics and computer science are advancing both separately and together.

JAMIE MORGENSTERN AND  GABRIEL CARROLL RECEIVE THE ELEVENTH SOCIAL CHOICE AND WELFARE PRIZE

"A jury composed of Pietro Ortovela (Princeton University), Ariel Procaccia (Harvard University), Szilvia Papai (Concordia Universtiy),  Arunava Sen (President of the Society for Social Choice and Welfare) and Marc Fleurbaey (Chair, President-elect of the Society for Social Choice and Welfare)  has chosen to award the eleventh Social Choice and Welfare Prize jointly to Gabriel Carroll (University of Toronto) and  Jamie Morgenstern (University of Washington).

"The purpose of the Social Choice and Welfare Prize is to honour young scholars of excellent accomplishment in the area of social choice theory and welfare economics. The laureate should be 40 years or less as of January of the year when the International Meeting of the Society for Social Choice and Welfare is scheduled to take place. During this meeting, the prize winner(s) will give a plenary lecture. For more information about the prize, please click here.

"The SCW prize medal "La Pensée" ("The Thought") is due to Raymond Delamarre (1890-1986), a rather well-known French sculptor associated with what has been called "Art Deco" (Chrysler Building and Empire State Building in New York, the architects Mallet-Stevens or Le Corbusier in France). He is in particular famous for his work at the entrance of the Suez Canal. A web site: www.atelier-raymond-delamarre.fr.

PAST LAUREATES :

2020 : PIETRO ORTOLEVA and  ARIEL PROCACCIA 

2018 : GEORGY EGOROV and DEBASIS MISHRA

2016 : FUHITO KOJIMA  and PARAG PATHAK

2014 : VINCENT CONITZER and TIM ROUGHGARDEN

2012 : LARS EHLERS and ADAM MEIROWITZ

2010 : FRANZ DIETRICH and CHRISTIAN LIST

2008 : TAYFUN SOMNEZ

2006 : JOHN DUGGAN

2004 : FRANCOIS MANIQUET

2002 : MATTHEW JACKSON


Gabriel Caroll




University of Toronto

Sunday, May 22, 2022

Seventh Marketplace Innovation Workshop (MIW), May 23-26, 2022 (10:45am EST - 2:45pm EST)

 Seventh Marketplace Innovation Workshop (MIW),  May 23-26, 2022 (10:45am EST - 2:45pm EST)   The conference will be virtual

Here is the program.

Organizers:

Itai Ashlagi, Management Science and Engineering, Stanford University

Omar Besbes, Columbia Business School, Columbia University

Nicole Immorlica, Microsoft Research

Vahideh Manshadi, School of Management, Yale University

Nicolas Stier-Moses, Core Data Science, Meta Platforms

Fanyin Zheng, Columbia Business School, Columbia University


Plenary speakers

Alessandro Bonatti, MIT

Bar Ifrach, Uber Freight

Myrto Kalouptsidi, Harvard University

Azarakhsh Malekian, University of Toronto

Michael Schwarz, Microsoft

Peng Shi, University of Southern California

Tim Roughgarden, Columbia University

Gabriel Weintraub, Stanford University

Saturday, May 21, 2022

Iowa State University celebrates Bertan Turhan

 The Iowa State University News Service has an article about the market design work of Bertan Turhan.

New model could improve matches between students and schools

"For the majority of students in the U.S., residential addresses determine which public elementary, middle, or high school they attend. But with an influx of charter schools and state-funded voucher programs for private schools, as well as a growing number of cities that let students apply to public schools across the district (regardless of zip code), the admissions process can turn into a messy game of matchmaking.

"Simultaneous applications for competitive spots and a lack of coordination among school authorities often result in some students being matched with multiple schools while others are unassigned. It can lead to unfilled seats at the start of the semester and extra stress for students and parents, as well as teachers and administrators.

"Assistant Professor of Economics Bertan Turhan at Iowa State University and his co-authors outline a way to make better, more efficient matches between students and schools in their new study published in Games and Economic Behavior. Turhan says their goal was to create a fairer process that works within realistic parameters.

“There are a lot of success stories in major U.S. cities where economists and policymakers worked together to improve school choice,” said Turhan. “The algorithm we introduced builds on that and could give school groups some degree of coordination and significantly increase overall student welfare in situations where there’s a lot of competition to get into certain schools.” 

...

"Over the next year, Turhan and his team will be studying the implementation of their model in India where two types of colleges have revamped their admissions process."

********

Here's the paper that was the occasion of the story:

Parallel markets in school choice by Mustafa Oğuz Afacan, Piotr Evdokimov, Rustamdjan Hakimov, and Bertan Turhan

Games and Economic Behavior, Volume 133, May 2022, Pages 181-201, https://doi.org/10.1016/j.geb.2022.03.003Get rights and content

Abstract: When applying to schools, students often submit applications to distinct school systems that operate independently, which leads to waste and distortions of stability due to miscoordination. To alleviate this issue, Manjunath and Turhan (2016) introduce the Iterative Deferred Acceptance mechanism (IDA). We design an experiment to compare the performance of this mechanism under parallel markets (DecDA2) to the classic Deferred Acceptance mechanism with both divided (DecDA) and unified markets (DA). Consistent with the theory, we find that both stability and efficiency are highest under DA, intermediate under DecDA2, and lowest under DecDA. While IDA is not strategy-proof, we show theoretically that strategic reporting can only lead to improved efficiency for all market participants. The experimental results are consistent with this prediction. Our findings cast doubt on whether strategy-proofness should be perceived as a universal constraint to market mechanisms.


Friday, May 20, 2022

Research on pedophilia presents career hazards

 It's not always easy to investigate repugnant things, let alone crimes.  Old Dominion University has parted ways with an assistant professor, Allyn Walker, who uses the pronoun "they."  They studied people who are sexually attracted to children, but don't act on their attraction, i.e. who aren't child molesters.  Walker's book on the subject drew unwanted attention and accusations that it promoted child molesting.

The Chronicle of Higher Ed has the story:

An Unacceptable Idea. A university says it supports free inquiry. So why does this pedophilia researcher no longer work there? By Emma Pettit

"Walker’s book, A Long, Dark Shadow: Minor-Attracted People and Their Pursuit of Dignity, examines adults who are sexually attracted to children but say they refrain from acting on that attraction. The scholar avoids the term “pedophiles,” even though its literal meaning describes only desire, not behavior, in part because it has come to be synonymous in the public mind with “child molester.” 

...

“Allow me to be clear: This book does not promote sexual contact between adults and minors,” Walker writes in the introduction. Knowing some readers might see it that way, though, Walker prepared. Before the book’s publication in June 2021, the scholar, then an assistant professor of sociology and criminal justice at Old Dominion University, wrote a memo for university leaders with talking points to respond to that misconception, should objections to the research arise.

...

"When Tucker Carlson covered the story, he referred to Walker as “a self-described ‘nonbinary assistant professor,’” adding, “we have no idea what that means, by the way, but that’s what this person calls him or herself.” Beside Carlson was a graphic that announced: “The Left’s Depraved New Low.”

"Students at Old Dominion also objected. They mounted a protest and urged the university to fire Walker. 

...

"Walker was placed on indefinite administrative leave.

...

"Walker’s leave notice, obtained by The Chronicle, said that the action was being taken “due to concerns over your safety and that of the campus, and to address the immediate effects of the reaction to your research and book which has impacted the University’s mission of teaching and learning.”

...

“Research into sensitive topics and the expression of new or controversial views lie at the heart of academic research. … At the same time,” Hemphill wrote, “this freedom carries with it the obligation to speak and write with care and precision, particularly on a subject that has caused pain in so many lives.”

...

"on November 24, Walker and the university jointly announced that the assistant professor had “decided to step down.”

...

"Though the wave of reactions was mighty, leaders at Old Dominion could have done more “to resist the power of the misreading of Dr. Walker’s work” and to protect the scholar’s reputation in the institution’s messaging, the university’s chapter of the American Association of University Professors wrote in an open letter. Old Dominion’s response “essentially indicated that if a conflict emerges between academic freedom and hateful political groups that threaten violence, then the politics of hate will win,” Kent Sandstrom, a professor in Walker’s department and a former dean of the college, said in an email. “I can’t think of a more troubling precedent.”

...

"Walker’s Old Dominion contract ends this month. For the time being, at least, they have found an academic home. They’ll be a postdoctoral fellow at Johns Hopkins’s Moore Center for the Prevention of Child Sexual Abuse."

Thursday, May 19, 2022

Frontiers of Economic Design (FED): Ellen Muir and I speak tomorrow (Friday) on Zoom

 We hope to start off this new seminar with a bang (9am Pacific time, noon on the East Coast, 18:00 in middle Europe...)

To hear us you have to register to get a link

Here's the seminar site:

Frontiers of Economic Design (FED)

"The goal of this seminar series is to bring young researchers in economic design and related areas together, to promote their work, and also to disseminate cutting-edge research. Each meeting will feature two presentations: one from an established researcher and one from a graduate student or post-doc. "


 

Black market tattoos in S. Korea: “No one’s trying to go to medical school to become a tattoo artist,”

 Tattooing is illegal (but tattoos are not) in S. Korea.  The NY Times has the story:

Tattoos, Still Illegal in South Korea, Thrive Underground. Tattoo artists, long treated as criminals for their work, say that it is time to end the stigma against their business.  By Christine Chung

"Under a ruling that has been in place since 1992, tattooing without a medical license can result in fines of up to $40,000 or even imprisonment. Opponents of decorative tattoos have invoked concerns about longstanding associations with organized crime, as well as fears about inadequate hygiene and potential harm inflicted by tattoo artists, who they say lack adequate skills.

"Attempts to overturn this ban have repeatedly failed. In March, the Constitutional Court in Seoul reaffirmed the tattoo industry’s illegality in a 5-to-4 ruling. South Korean tattoo artists and customers believe that the ruling is at odds with reality, citing drastically changed social norms that have fostered a thriving underground industry, greater openness and acceptance of tattoos, and rising international demand for what are known as “k-tattoos.”

"While tattoos have grown in acceptance in most parts of the world — exceptions include several Islamic countries — South Korea remains one of the few where the artists are treated as criminals. Tens of thousands of them work in secret here, under constant threat of exposure to law enforcement.

...

“No one’s trying to go to medical school to become a tattoo artist,” she said.

...

"Mr. Kim is the founder of a 650-member tattoo labor union that advocates rights of artists. Legalization would create safer, more sanitary environments for both customers and artists, he said.

"Tattoo artists often meet clients alone and trust strangers to keep their secret. Female artists are particularly vulnerable to sexual violence. In the past, the police have conducted sweeps rounding up artists, Sanlee said. Rival shops have been known to flag artists to the police.

“Since what we’re doing is illegal, we’re in the blind spot,” she said. “Because of that, there are many people that are exploiting the situation.”