Sunday, July 17, 2022

Follow market design on twitter

 I don't have a twitter account, but for those of you who do, there are some accounts that tweet daily about market design and adjacent subjects, mostly by posting links. Here are three that I know about, and the urls at which they can also be viewed on the web.

Market Design Community https://twitter.com/econd47?lang=en
@econD47
An informal page to share announcements (e.g., papers, conferences, applied work, jobs) relevant to the market design community. Administered by .
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EconCS Preprints & Blogs https://twitter.com/econ_cs
@econ_cs
Posts from arXiv cs.GT and EconCS blogs, maintained by .

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@MarketDesignBot
Tweets articles from Al Roth's Market Designer Blog RSS Feed. Bot. Unaffiliated with Al Roth. For bug reports please see GitHub. Administered by .

Saturday, July 16, 2022

Legal and illegal sales of body parts

 U.S. law makes it illegal to sell deceased donor organs for transplant, i.e. to save a life, but it's otherwise legal to sell body parts or whole cadavers, for research, for instruction, etc.  Nevertheless, alongside the legal, regulated market, which requires consents and precautions, is an illegal black market which is occasionally prosecuted.  Here's a recent case, as reported in the NYT:

Funeral Home Operator Pleads Guilty in ‘Illegal Body Part Scheme’.  Megan Hess, who pleaded guilty to mail fraud, sold body parts without families’ consent... By Alex Traub

"The operator of a Colorado funeral home who was accused of stealing body parts and selling them to medical and scientific buyers, making hundreds of thousands of dollars in what the authorities called an “illegal body part scheme,” pleaded guilty to mail fraud on Tuesday, the Justice Department said.

...

"Here’s how prosecutors said the scheme worked: From about 2010 to 2018 Ms. Hess was in charge of Donor Services, a nonprofit “body broker service,” and Sunset Mesa Funeral Directors, which offered to arrange cremations, funerals and burials in the small western Colorado city of Montrose.

"Ms. Hess and her mother sometimes obtained consent from families to donate small tissue samples or tumors of their dead relative, according to an indictment in the case. On other occasions, their request was rejected, and sometimes, they never brought up the topic at all.

"In any case, the documents say, on hundreds of occasions the funeral home operators would sell heads, torsos, arms, legs or entire human bodies. Frequently, they delivered cremated remains to families with the suggestion they were the remains of their relative when, in fact, they were not, according to the indictment.

...

"The scheme included forging paperwork, such as signatures on authorization forms for donating body parts, and misleading buyers about the results of medical tests performed on the deceased, court documents said. Ms. Hess altered lab reports so that they said that people had tested negative for diseases like H.I.V. and hepatitis when they had actually tested positive, according to the authorities."


Friday, July 15, 2022

The Future of Living Donor Kidney Transplantation (videos)

On May 7, 2022 the University of Chicago hosted a Symposium on "The Future of Living Donor Kidney Transplantation: Evolving National Perspectives in Kidney Transplant "

Philip Held, one of the organizers, has provided the following guide, concluding with a link to an elegant Data Handbook that gives direct access to each talk.

 "A Symposium: The Future of Living Kidney Donor Transplantation

Earlier this year, we presented a virtual symposium on the Future of Living Kidney Donor Transplantation.  A primary focus was on the ethics of rewarding organ donors with an opening presentation by:

 ·       Janet Radcliffe Richards, a philosopher and ethicist from Oxford University.

 Other speakers and topics included:

 ·       Nobel Laureate Alvin Roth Ph.D. of Stanford University who laid out the case for paired kidney donation (aka kidney exchange), the only major technical improvement in transplantation in years.

 ·       Frank McCormick, Ph.D. presented recently published (Value in Health) research showing how the government can completely end the kidney shortage and save more than 40,000 kidney failure patients each year from premature death by rewarding living kidney donors. 

 The Symposium took place on May 7, 2022.  It was hosted by John Fung M.D. Ph.D. at the University of Chicago’s Transplantation and Transplant Institute and was funded by the National Kidney Donation Organization (NKDO) and WaitListZero.

 This Symposium presented a broad education on the subject of living kidney donation, and indeed was presented for Continuing Medical Education (CME) credits by the University of Chicago. 

 The audio-visual recording of the entire University of Chicago’s CME symposium is available, for free. Access is extremely easy and one can access any and all presentations with 3 simple clicks starting with 2 clicks here: Data Handbook."

 If you prefer you can binge on the sessions in order:

Session 1:  The Future of Living Kidney Donor Transplantation

Session 2:  The Future of Living Kidney Donor Transplantation

Session 3:  The Future of Living Kidney Donor Transplantation

My talk, called "Kidney Exchange (and Kidney Controversy)" is the first half hour of the video below of the second of three symposium sessions.


The first session of the symposium is below, starting with an intro by Philip Held, focusing on some of the inequalities that we see in dialysis and transplant, followed by the philosopher Janet Radcliffe-Richards (starting at minute 17:15), and then Sally Satel (at 59:30), and then a round table discussion starting at 1:12.


 
In the discussion I asked Dr. Radcliffe Richards (who has been a tireless advocate of thinking more clearly about the tradeoffs involved in preventing compensation of donors) what experience she could share about when and how she had been successful in convincing people to change their minds.  She replied "I don't regard myself as an expert in mind changing, except with people who are happy to follow arguments."

Session 3 is below, including talks by Martha Gerson, Thomas Peters, Arthur Matas, John Roberts,  and Josh Morrison.



These and other videos have been assembled by NKDO.

Thursday, July 14, 2022

Allegations of organ trafficking for kidney transplants--in England and India

 From time to time there are stories of prosecutions for organ trafficking in connection with kidney transplants.

Here's a story developing in England. (Early reports were that the alleged donor/seller/victim was a child, but apparently he's not a minor):

From the BBC:

Ike Ekweremadu: Nigerian senator faces London organ-harvesting trial

"A prominent Nigerian senator and his wife who are accused of plotting to harvest a man's kidney in the UK will face trial at the Old Bailey.

"Ike Ekweremadu, 60, and Beatrice Nwanneka Ekweremadu, 55, are alleged to have transported a 21-year-old man from Nigeria to London.

"Prosecutors allege the couple planned to have his kidney removed so it could be given to their daughter.

...

"The alleged victim is said to have refused to consent to the procedure after undergoing tests at the Royal Free Hospital in Hampstead."

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Not long ago I participated in an online conversation including Professor Janet Radcliffe Richards, who recalls that her view that bans on kidney sales are ill-conceived arose from news in the 1980's about a case involving Turkish sellers (here's an LA Times story from then):

London Kidneys-for-Cash Scandal Prompts Action to Ban Sale of Organs BY ROBERT BARR JULY 16, 1989

"“The concept of organs being bought and sold for money is entirely unacceptable in a civilized society,” Health Minister Roger Freeman told a House of Commons committee during debate on proposed legislation outlawing organ sales. The bill is expected to pass Parliament later this month.

"Not all lawmakers agree.

“The bill will cause death where there could be life, and to prolong suffering where we could provide relief,” said Sir Michael McNair-Wilson, a Conservative Parliament member awaiting a kidney transplant.

...

"Neil Hamilton, who cast the only vote against the bill in committee, said he had pondered the dilemma facing one Turk who allegedly sold a kidney.

“His daughter was suffering from a medical problem which threatened her life, but it could not be solved in Turkey without money,” Hamilton said. “If he did not get the money for the operation, his daughter would die.”

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The situation in India is complex, since there is or was something of a long tradition of kidney sales, which are against the law, and are guarded against by authorization committees that have to approve each living donor transplant. Recently, kidney exchange has become legal in India, but the law only allows close family to be the intended donor in an incompatible patient-donor pair. Below is a report of a case where it's alleged that an attempted donor was paid, and also illegally claimed to be a family relation.

Here's the Hindustan Times story:

Ruby Hall Clinic kidney transplant ‘malpractices’ probe handed over to crime branch

"Earlier on Wednesday, police officials probing the case told Magisterial court that more cases of kidney transplants based on the relationship claims have been unearthed during the interrogation of agents Ravindra Rodge and Abhijit Gatane. Both have been arrested by the police. These two agents having donated their kidneys earlier and also played the role of middlemen in at least four kidney transplants where alleged malpractices were involved.

...

"The case pertains to a kidney swap procedure, also known as paired kidney exchange, between the Moshi man and the Kolhapur woman posing as his wife, and a mother-daughter duo from Baramati."

And here's the story in the Indian Express:

Two middlemen arrested in Pune kidney transplant malpractice case. The other accused in the case, including Ruby Hall Clinic doctors, the patient who received the kidney, and the unrelated donor who was passed off as his wife--are yet to be arrested.

"Police have arrested the two middlemen over the alleged malpractices in a kidney transplant conducted at Pune’s Ruby Hall Clinic in March in which an unrelated woman was allegedly presented as the organ receiver’s wife and promised Rs 15 lakh in return.

...

"Among the 15 people named in the FIR are the hospital’s managing trustee, Dr Purvez K Grant, deputy medical director Dr Rebecca John, legal advisor Manjusha Kulkarni, nephrologist Dr Abhay Sadre, urologists Dr Bhupat Bhati and Dr Himesh Gandhi and transplant coordinator Surekha Joshi. The police also booked the two middlemen, the patient—from Pimpri Chinchwad’s Moshi area—who received the kidney, his wife, their three family members, the woman from Kolhapur who was allegedly passed off as the patient’s wife to become the donor."

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Among the most vigorous opponents of paying kidney donors--e.g. among some of those who think it's a crime against humanity--there's also opposition to extending the scope of legal, ethical, unpaid kidney donation and transplantation, particularly in poor countries.  One reason for this is the intuition that more transplantation will cause more paid transplantation.  The cases reported above, although rare, help to support this view.

But a much stronger case can be made that it is the unavailability of transplants that causes exploitative black markets, and that increasing the availability of legal transplants will reduce the demand for illegal ones.

Wednesday, July 13, 2022

Kidney exchange debate in Brazil

 A discussion of kidney exchange in Brazil began with this letter to the editor, describing how kidney exchange (aka kidney paired donation) could increase transplantation in Brazil:

Bastos, J., Mankowski, M., Gentry, S., Massie, A., Levan, M., Bisi, C., Stopato,C., Freesz, T., Colares, V., Segev, D. and Ferreira, G., 2021. Kidney paired donation in Brazil-A single center perspective. Transplant International: Official Journal of the European Society for Organ Transplantation.

"Kidney paired donation (KPD) represents a strategy for increasing the number of LDKT, offering an incompatible donor/recipient pair, the chance to exchange with another pair in the same situation [4]. In Brazil, KPD is still prohibited by law. We designed a study to show mathematically how KPD could increase LDKT in a single center in Brazil.

Several comments followed in a forum.. The name of the forum is ""Kidney Paired Donation is necessary in Brazil."  But not everyone agrees with that headline.

In particular, a letter to the editor from Mario Abbud-Filho & Valter Duro Garcia concludes that there are too many poor people in Brazil to allow kidney exchange:

 "We do not condemn the KPD strategy, but we disagree that it should be proposed in the actual Latin American context, where such great socioeconomic disparities do exist and could fuel organ trafficking and commerce."

That letter drew this rejoinder, in favor of kidney exchange by Marcelo Perosa:

"We do not understand the rationale behind the claim that KPD could stimulate organ trafficking and trade if the LD of an eventual KPD swap would be submitted to the same steps and rigor currently used for unrelated LDKT to be approved.

"The acceptance of KPD is growing around the world. It brings a potential technological development with advanced algorithms and softwares, unites clinicians, surgeons, immunologists in fruitful discussions and analysis of match runs, expanding and exchanging knowledge among multidisciplinary teams that currently work separately. KPD still has the beauty of not dividing, but joining efforts among different centers since the more groups participating, the more patients in the database and more matches are found.

"The main goal of KPD was to increase the chance of KT among highly sensitized (HS) patients, preventing the onerous treatment of desensitization. For a country with more limited economic resources like Brazil, KPD makes perfect sense for always contemplating compatible, cheaper, and more successful transplants."

And a final summation from two of the authors of the original paper:

Bastos, Juliana, and Gustavo Ferreira. "Kidney Paired Donation in Brazil-It is time to talk about it." Transplant International: Official Journal of the European Society for Organ Transplantation (2021), 01 Oct 2021, 34(10):1757-1758 DOI: 10.1111/tri.14025 PMID: 34431143 

"The history of kidney transplantation in Brazil began in 1965 when the first related living donor transplant. Since then, Brazil has established a public programme and now has the most extensive public kidney transplantation system in the world. Brazil has established a regulated, standardized and ethical organ procurement system, created awareness of transplantation in physicians and the public, upgraded facilities and standardized medical care, and enforced legislation for transplantation.

"The Aguascalientes document establishes that KPD and altruistic donation are acceptable. Its final recommendations also say that the country must provide access to transplantation based on ethical considerations and protect the most vulnerable population for a healthy transplant system [4]. We are failing to do that when we have a system that does not contemplate highly sensitized recipients, as shown by a recent Brazilian analysis: highly sensitized patients (PRA > 98%) had lower transplant rates (3.7% vs. 31.2%) and higher mortality (HR: 1.09, P = 0.05) in the waitlist when compared to nonsensitized patients [1]."

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Earlier related posts:

aturday, February 12, 2022

Tuesday, July 12, 2022

Evidence based medical policy: compensation for donors, by Luke Semaru and Arthur Matas in the AJT

The American Journal of Transplantation has posted ahead of print a great article proposing clinical trials of a sensible system by which kidney donors might be compensated.  It's main point is that evidence might be useful...

 A Regulated System of Incentives for Living Kidney Donation: Clearing the Way for an Informed Assessment by Luke Semaru, and Arthur J. Matas

First published: 25 June 2022 https://doi.org/10.1111/ajt.17129

This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi:10.1111/ajt.17129

Abstract: "The kidney shortage continues to be a crisis for our patients. Despite numerous attempts to increase living and deceased donation, annually in the United States, thousands of candidates are removed from the kidney transplant waiting list because of either death or becoming too sick to transplant. To increase living donation, trials of a regulated system of incentives for living donation have been proposed. Such trials may show: 1) a significant increase in donation, and 2) that informed, incentivized donors, making an autonomous decision to donate, have the same medical and psychosocial outcomes as our conventional donors. Given the stakes, the proposal warrants careful consideration. However, to date, much discussion of the proposal has been unproductive. Objections commonly leveled against it: fail to engage with it; conflate it with underground, unregulated markets; speculate without evidence; and reason fallaciously, favoring rhetorical impact over logic. The present paper is a corrective. It identifies these common errors so they are not repeated, thus allowing space for an assessment of the proposal on its merits."

The article begins with some relevant history:

"The  concept  of  incentives  for  living  donation  arose  early  in  the  history  of  kidney  transplantation.  In  the 1960s, the framers of the Uniform Anatomical Gift Act noted “every  payment  is  not necessarily  unethical”,  but  “until  the  matter  of  payment becomes a  problem  of  some  dimensions,  the  matter  should  be  left  to  the  decency  of  intelligent  human  beings”.1  In  1983, the  matter  of payment  became a problem when,  in response to the organ shortage, a physician  (whose license had previously  been revoked) established a company to broker international  kidney sales. Impoverished  residents of low-income countries  were to be flown  to the United States to sell their kidneys at a nominal  price. This was met with general condemnation,  and in part, led to passage of the  National  Organ  Transplant  Act (NOTA,  Public Law 98-507) which made it a federal crime to “knowingly  acquire, receive or otherwise transfer any  human  organ for valuable consideration for use in human  transplantation...”.  At  the  same  time,  the  World  Medical  Association,  the  World  Health  Organization,   the  Council  of  Europe,  and  the  International  Council of the Transplantation  Society, among others, issued statements  of opposition to the sale of organs. "

...

"We are not tempted to conclude,  for example, that,  since in the 1920s Prohibition brought  about  an increase in political corruption  and organized crime, the sale of alcohol,  when  legal  and  regulated,  would  do  the  same.  For the same reason, we should not be tempted to conclude  that, since participants in unregulated  markets were swindled by outlaws, incentivized  donors in a regulated system will fare the same."


Monday, July 11, 2022

Medical assistance in dying: palliative care

A lot of the discussion of medical assistance in dying has focused on assisted suicide, but there is also the question of trying to die well by avoiding doomed heroic medical procedures at the end. Deborah James, an Englishwoman who chronicled how she dealt with her grim diagnosis, died recently, and is remembered in the British Press.

Here's a story, by a palliative care doc, from the London Sunday Times: 

How to have a ‘good death’ like Deborah James  by Dr Rachel Clarke

"As a palliative care doctor, I’m endlessly astounded by my patients’ capacity to savour their final days with a passion and intensity that can put the rest of us to shame. As time slips through their fingers, people find ways to be incandescent with life.

...

"I often ask patients: “What is the one thing you are most afraid of?” Invariably, the answer isn’t being dead per se, but the imagined horrors of the dying process. A conversation unfolds in which they learn that there are no upper limits on the doses of drugs we can give and that dying is rarely as dreadful as people fear. For the first time, they may start to feel a sense of control over their future.

"Practically speaking, planning ahead gives you the best chance of authoring how your life ends. Deborah, for example, died last week, aged 40, precisely on her terms — at her parents’ house, in the heart of her family, with domestic life quietly unspooling around her — by laying out her wishes clearly.

"Where would you like to be at the end — home, hospital or hospice? Who would you like to be with you when it happens? Sometimes patients regret being swept along by an impersonal medical machine that pushes endless rounds of gruelling treatment. Writing an advance care plan is the best way to ensure that what matters to you is placed centre stage. Appointing a legal power of attorney means that if you lose the capacity to make decisions for yourself, someone else can do so on your behalf.

"Consider asking to be referred to a palliative care team as early as possible. We can help with logistics such as finding carers, equipment, financial advice, “just in case” medications to store at home, and psychological support for adults and children."

Sunday, July 10, 2022

Texas inmate asks to delay execution for kidney donation

 For all you practical ethicists out there, here's a story by the AP that has divided my email correspondents:

Texas inmate asks to delay execution for kidney donation By JUAN A. LOZANO

"A Texas inmate who is set to be put to death in less than two weeks asked that his execution be delayed so he can donate a kidney.

...

"In a letter sent Wednesday, Gonzales’ lawyers, Thea Posel and Raoul Schonemann, asked Republican Gov. Greg Abbott to grant a 30-day reprieve so the inmate can be considered a living donor “to someone who is in urgent need of a kidney transplant.”

...

"Gonzales’ attorneys say he’s been determined to be an “excellent candidate” for donation after being evaluated by the transplant team at the University of Texas Medical Branch in Galveston. The evaluation found Gonzales has a rare blood type, meaning his donation could benefit someone who might have difficulty finding a match.

“Virtually all that remains is the surgery to remove Ramiro’s kidney. UTMB has confirmed that the procedure could be completed within a month,” Posel and Schonemann wrote to Abbott.

"Texas Department of Criminal Justice policies allow inmates to make organ and tissue donations. Agency spokeswoman Amanda Hernandez said Gonzales was deemed ineligible after making a request to be a donor earlier this year. She did not give a reason, but Gonzales’ lawyers said in their letter that the agency objected because of the pending execution date.

...

"In a report, the United Network for Organ Sharing, a nonprofit that serves as the nation’s transplant system under contract with the federal government, listed various ethical concerns about organ donations from condemned prisoners. They include whether such donations could be tied to prisoners receiving preferential treatment or that such organs could be morally compromised because of their ties to the death penalty."


HT: Frank McCormick

Saturday, July 9, 2022

Prospects for improving kidney exchange in France

A recent article in Néphrologie & Thérapeutique simulates how kidney exchange in France could possibly be made substantially more effective, following liberalizations in the law. (The article is in French, but also has an English abstract.) A promising feature is that the article is a collaboration between physicians and market design economists.

Perspectives pour une évolution du programme de don croisé de reins en France

Perspectives for future development of the kidney paired donation programme in France by Julien Combe, Victor Hiller, Olivier Tercieux,  Benoît Audry, Jules Baudet, Géraldine   Malaquin, François Kerbaul, Corinne Antoine, Marie-Alice Macher, Christian Jacquelinet, Olivier Bastien, and Myriam Pastural

Abstract: "Almost one third of kidney donation candidates are incompatible (HLA and/or ABO) with their directed recipient. Kidney paired donation allows potential donors to be exchanged and gives access to a compatible kidney transplant. The Bioethics Law of 2011 authorised kidney paired donation in France with reciprocity between 2 incompatible “donor-recipient” pairs. A limited number of transplants have been performed due to a too restricted authorization compared to other European practices. This study presents the perspectives of the new Bioethics Law, enacted in 2021, which increases the authorised practices for kidney paired donation in France. The two simulated evolutions are the increase of the number of pairs involved in a kidney paired donation to 6 (against 2 currently) and the use of a deceased donor as a substitution to one of living donor. Different scenarios are simulated using data from the Agence de la Biomedecine; incompatible pairs registered in the kidney paired donation programme in France between December 2013 and February 2018 (78 incompatible pairs), incompatible transplants performed during the same period (476 incompatible pairs) and characteristics of deceased donors as well as proposals made over this period. Increasing the number of pairs has a limited effect on the number of transplants, which increases from 18 (23% of recipients) in the current system to 25 (32% of recipients) when 6 pairs can be involved. The use of a deceased donor significantly increases the number of transplants to 41 (52% of recipients). This study makes it possible to evaluate the increase in possibilities of kidney transplants by kidney paired donation following the new bioethics law. A working group and an information campaign for professionals and patients will be necessary for its implementation."

While the paper focuses on the situation in France, it's opening lines could have been written anywhere:

"La France, comme l’ensemble des pays du monde, souffre d’une pénurie de greffons rénaux de sorte que le nombre de malades en attente d’une greffe de rein ne cesse de croître." [France, like all countries in the world, suffers from a shortage of kidney transplants so that the number of patients waiting for a kidney transplant continues to grow."

Here's hoping that the authors will succeed in their plans to use deceased-donor initiated chains to save more lives in France.

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Earlier related posts:

Sunday, April 3, 2022

Monday, November 22, 2021

Tuesday, August 7, 2018

 

Friday, July 8, 2022

FDA Contemplating Clinical Trials of Pig-Organ Transplants (WSJ)

The WSJ has the story:

FDA Planning to Allow Clinical Trials of Pig-Organ Transplants. Move could be an important step in effort to ease the shortage of human donor organs.  By Amy Dockser Marcus and Liz Essley Whyte

"The Food and Drug Administration is devising plans to allow clinical trials testing the transplantation of pig organs into humans, a person familiar with the matter said.

"If the agency follows through, the trials could be a key step in an effort to ease the deadly shortage of human donor organs. The planning comes in the wake of a handful of experimental surgeries involving the transplantation of pig organs into a critically ill man and in brain-dead patients.

"It is unclear when the trials would begin, the person said, adding that proposals from researchers would be handled case by case."

Thursday, July 7, 2022

Coordinating the timing of the market for new Economics Ph.D.s: guidance from the AEA

 Here's an email broadcast by the American Economic Association, aimed to promote market thickness by avoiding unraveling and dealing with congestion:

AEA Guidance on Timeline for 2022-23 Economics Job Cycle

 July 1, 2022

To: Members of the American Economic Association
From: Peter L. Rousseau, Secretary-Treasurer
Subject: AEA Guidance on Timeline for 2022-23 Economics Job Cycle

The AEA Executive Committee, in conjunction with its Committee on the Job Market, recognizes that it is to the benefit of the profession if the job market for economists is thick, with many employers and job candidates participating in the same stages at the same time.  Moreover, the AEA's goals of diversity, equity, and inclusion are fostered by having a timeline that remains widely known and accepted, ensuring that candidates can correctly anticipate when each stage will occur. With these goals in mind, and in light of inquiries from both students and departments about how to proceed, the AEA asks that departments and other employers consider the following timeline for initial interviews and “flyouts” in the upcoming job cycle (2022-23).  

Interview invitations
The AEA suggests that employers wait to extend interview invitations until the day after job market signals are transmitted to employers.

Rationale: the AEA created the signaling mechanism to reduce the problem of asymmetric information and allow job candidates to credibly signal their interest to two employers. The AEA asks that employers wait to extend interview invitations until those signals have been transmitted, and to use that information to finalize their set of candidates to interview. This helps the job market in several ways: it reduces the problem of imperfect information, it helps ensure a thick market at each stage, and it promotes the AEA’s goals of diversity, equity, and inclusion. Job candidates from historically under-represented groups may lack informal networks and thus may especially rely on the signals to convey their interest. Waiting to review the signals before issuing invitations promotes a fairer, more equitable process.

We also ask that all employers indicate on EconTrack when they have extended interview invitations; this allows candidates to learn about the status of searches without visiting websites posting crowd-sourced information and potentially inappropriate other content.

Interviews
The AEA recommends that employers conduct initial interviews starting on Monday, January 2, 2023, and strongly recommends that all interviews take place virtually (e.g. by Zoom). We suggest that interviews not take place during the AEA meeting itself (January 6-8, 2023).

Rationale: In the past, interviews were conducted in person at the AEA/ASSA meetings. This promoted thickness of the market, because most candidates and employers were present at the in-person meetings, but had the disadvantage of precluding both job candidates and interviewers from fully participating in AEA/ASSA sessions. 

Interviews should now be conducted virtually to prevent risk of exposure to COVID, and to promote equity among the candidates. Informal feedback to the AEA committee on the job market indicated that the benefits of virtual first-round interviews (e.g. low monetary cost, zero cost in travel time, convenience) outweighed the limitations (e.g. less rich interaction).

We recommend that employers wait until January 2 to interview candidates because job candidates may have teaching or TA responsibilities in December. Moreover, having a clear start date for interviews will help candidates to have accurate expectations of the timing of the stages of the market. An unraveling of the market works against the AEA’s goal of having a thick market at each stage and also works against candidates having uniform expectations of the timing of each stage of the market.

We ask that interviews NOT take place during the AEA/ASSA meetings (January 6-8, 2023) in order to allow job candidates and interviewers to participate in the conference.

Flyouts and offers
Flyouts and offers have historically happened at times appropriate for the employer, and the AEA sees no reason to suggest otherwise.  We ask that all employers indicate on EconTrack when they have extended flyout invitations and closed their searches. Unlike with interviews, the AEA does not take a position on whether flyouts should be virtual or in-person.

Job market institutions and mechanisms
Please keep in mind the various job market institutions and mechanisms created by the AEA to improve the job market:

·       The JOE Network includes a database of job openings for economists.

o   Employers may sign up here: https://www.aeaweb.org/joe/employer.

o   Job candidates may search the database here: https://www.aeaweb.org/joe/listings.

o   The JOE Network has an electronic clearinghouse for job candidates to submit job applications. Job candidates may register here: https://www.aeaweb.org/joe/candidate.

·       The AEA Committee on the Job Market releases data and guidance on the job market here: https://www.aeaweb.org/joe/communications.

·       EconTrack: a board on which employers can indicate when they have extended interview and flyout invitations, and closed their search: https://www.aeaweb.org/econtrack.


Thank you for helping to ensure a transparent and equitable job market for new Ph.D. economists.  

Wednesday, July 6, 2022

Mark Braverman wins Abacus Medal (formerly Nevanlinna Prize)

 Mark Braverman, a computer scientist whose work touches on mechanism design, has won the Abacus Medal of the International Mathematical Union.

Here are some links: citationvideowrite-upCV/publicationsproceedingsinterviewPlus magazine! article

Readers of this blog may be interested in these papers:

Optimization-friendly generic mechanisms without money

"The goal of this paper is to develop a generic framework for converting modern optimization algorithms into mechanisms where inputs come from self-interested agents. We focus on aggregating preferences from n players in a context without money. Special cases of this setting include voting, allocation of items by lottery, and matching. Our key technical contribution is a new meta-algorithm we call \apex (Adaptive Pricing Equalizing Externalities). The framework is sufficiently general to be combined with any optimization algorithm that is based on local search. We outline an agenda for studying the algorithm's properties and its applications. As a special case of applying the framework to the problem of one-sided assignment with lotteries, we obtain a strengthening of the 1979 result by Hylland and Zeckhauser on allocation via a competitive equilibrium from equal incomes (CEEI). The [HZ79] result posits that there is a (fractional) allocation and a set of item prices such that the allocation is a competitive equilibrium given prices. We further show that there is always a reweighing of the players' utility values such that running unit-demand VCG with reweighed utilities leads to a HZ-equilibrium prices. Interestingly, not all HZ competitive equilibria come from VCG prices. As part of our proof, we re-prove the [HZ79] result using only Brouwer's fixed point theorem (and not the more general Kakutani's theorem). This may be of independent interest."

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Clearing Matching Markets Efficiently: Informative Signals and Match Recommendations by Itai Ashlagi , Mark Braverman, Yash Kanoria , Peng Shi , Management Science, 2020, 66(5), pp.2163-2193.  https://doi.org/10.1287/mnsc.2018.3265

Abstract: "We study how to reduce congestion in two-sided matching markets with private preferences. We measure congestion by the number of bits of information that agents must (i) learn about their own preferences, and (ii) communicate with others before obtaining their final match. Previous results suggest that a high level of congestion is inevitable under arbitrary preferences before the market can clear with a stable matching. We show that when the unobservable component of agent preferences satisfies certain natural assumptions, it is possible to recommend potential matches and encourage informative signals such that the market reaches a stable matching with a low level of congestion. Moreover, under our proposed approach, agents have negligible incentive to leave the marketplace or to look beyond the set of recommended partners. The intuitive idea is to only recommend partners with whom there is a nonnegligible chance that the agent will both like them and be liked by them. The recommendations are based on both the observable component of preferences and signals sent by agents on the other side that indicate interest."

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Update: from Quanta.

The Scientist Who Developed a New Way to Understand Communication. Mark Braverman has spent his career translating thorny problems into the language of information complexity.  by Stephen Ornes

"While Braverman continues to guide the theory as his former students and postdocs push it forward, the bulk of his work is done. Now his interests are more focused on a new field called mechanism design, which uses the mathematical approaches of economics and game theory. "