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Unpaired Kidney Exchange: Overcoming Double Coincidence of Wants without Money

Mohammad Akbarpour, Julien Combe, YingHua He, Victor Hiller, Robert Shimer, and Olivier Tercieux

For an incompatible patient-donor pair, kidney exchanges often forbid receipt-before-donation (the patient receives a kidney before the donor donates) and donation-before-receipt, causing a double-coincidence-of-wants problem. We study an algorithm, the Unpaired kidney exchange algorithm, which eliminates this problem. In a dynamic matching model, we show that the waiting time of patients under Unpaired is close to optimal and substantially shorter than under widely-used algorithms.

Gang rule: Understanding and countering criminal governance

Christopher Blattman, Gustavo Duncan, Benjamin Lessing, and Santiago Tobón

Criminal groups govern millions worldwide. Even in strong states, gangs resolve disputes and provide security. Why do these duopolies of coercion emerge? Often, gangs fill vacuums of official power, suggesting that increasing state presence should crowd out criminal governance. We show, however, that state and gang rule are sometimes complements. In particular, gangs could minimize seizures and arrests by keeping neighborhoods orderly and loyal.

Behavioral Responses to Wealth Taxation: Evidence from Colombia

Juliana Londoño-Vélez and Javier Ávila-Mahecha

We study behavioral responses to personal wealth taxes in Colombia. We utilize tax microdata from 1993 to 2016 linked with the leaked Panama Papers to investigate offshoring to the country’s key tax havens. We leverage variation from discrete jumps in tax liability and four major reforms to the wealth tax system, including changes in tax rates and duration, using bunching and difference-in-difference techniques. We find compelling evidence that taxpayers instantly reduce the wealth they declare in response to a wealth tax.

Market Power and Price Informativeness

Marcin Kacperczyk, Jaromir Nosal, and Savitar Sundaresan

We study the distributional effects of asset ownership on price informativeness in a general equilibrium model. The model features investors (oligopolists) with different degrees of price impact and abilities to learn about individual asset payoffs from private and price signals, and a competitive fringe that only learns from asset prices. We show that price informativeness is non-monotonic in the oligopolists’ aggregate size, decreasing in the sector’s concentration and in the size of the passive sector.

Trade Wars, Nominal Rigidities and Monetary Policy

Stephane Auray, Michael B Devereux, and Aurelien Eyquem

This paper shows that the outcome of trade wars for tariffs and welfare will be affected by the monetary policy regime. The key message is that trade policy interacts with monetary policy in a way that magnifies the welfare costs of discretionary monetary policy in an international setting. If countries follow monetary policies of flexible inflation targeting, trade wars are relatively mild, with low equilibrium tariffs and small welfare costs.

Optimal Pricing of a New Utility Service: The Case of Piped Water in Vietnam

Quy-Toan Do and Hanan G. Jacoby

As utility services expand throughout the developing world, providers must grapple with how to set prices to recover average costs. Data from a multi-year randomized pricing experiment among nearly 1500 recently-connected piped water customers in Vietnam reveal month-to-month demand persistence. Based on structural demand estimation, we document how endogenous preferences, if unaccounted for, can lead to low take-up and thereby threaten the financial viability of the new water utility.

Excess Capacity and Demand Driven Business Cycles

Tiancheng Sun

I build a macroeconomic model that features chronic excess capacity. Firms can use capacity to compete for buyers who are not fully attentive to prices. If one firm expands capacity while other firms do not, it “steals” or attracts profitable demand from others. Theoretically, I show that this capacity competition can cause an over-accumulation of capacity. In the presence of chronic excess capacity, capital resources can be slack, and demand shocks can have large effects on output.

A Structural Analysis of Mental Health and Labor Market Trajectories

Gregory Jolivet and Fabien Postel-Vinay

We analyze the joint life-cycle dynamics of labor market and mental health outcomes while allowing for two-way interactions between work and mental health. We model selection into jobs on a labor market with search frictions, accounting for the level of exposure to stress in each job using data on occupational health contents. Taking our model to British data from Understanding Society combined with information from O*NET, we estimate the impact of job characteristics on health dynamics and the effects of health and job stress contents on career choices.

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Version 2.0 of the National Elections Database is online!
We now cover presidential and parliamentary elections 1789–2023, extending the post-1945 data of Electoral Turnovers @RevEconStudies (https://academic.oup.com/restud/advance-article/doi/10.1093/restud/rdae108/7899604).
w/ @benjaminmarx and @vincent_rollet

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``Many networks naturally form as people come together to form subgraphs, e.g. as coauthors of a paper, or other teams. This is the basis for a new, computationally tractable method of estimating network formation."

From Chandrasekhar & @JacksonmMatt:

https://www.restud.com/a-network-formation-model-based-on-subgraphs/

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Recently accepted to #REStud, ``Simultaneous Search and Adverse Selection," from Auster, Gottardi and Wolthoff @rpwolthoff:

https://www.restud.com/simultaneous-search-and-adverse-selection/

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Recently accepted to #REStud, ``Affiliated Common Value Auctions with Costly Entry," from Murto & Välimäki:

https://www.restud.com/affiliated-common-value-auctions-with-costly-entry/

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