We study a multi-dimensional collective decision under incomplete information. Agents have Euclidean preferences and vote by simple majority on each issue (dimension), yielding the coordinate-wise median. Judicious rotations of the orthogonal axes -- the issues that are voted upon -- lead to...

Dozens of school districts and college admissions systems around the world have reformed their admissions rules in recent years. As the main motivation for these reforms, the policymakers cited the strategic flaws of the rules in place: students had incentives to game the system. However, after...

This paper introduces a mechanism design approach that allows dealing with the multiple equilibrium problem, using mechanisms that are robust to bounded rationality. This approach is a tool for constructing supermodular mechanisms, i.e. mechanisms that induce games with strategic...

We introduce a two-sided, many-to-one matching with contracts model in which agents with unit demand match to branches that may have multiple slots available to accept contracts. Each slot has its own linear priority order over contracts; a branch chooses contracts by filling its slots...

A new mechanism was introduced in New York City and Boston to assign students to public schools. This mechanism was advocated for its superior fairness property, besides others. We introduce a new framework for school-choice problems and two notions of fairness in lottery design based on ex-ante...

In this note, we use the technique of option sets to sort out the implications of coalitional strategyproofness in the spatial setting. We also discuss related issues and open problems. -- social choice ; strategyproofness ; voting

We present a dynamic theory of electoral competition to study the determinants of fiscal policy. In each period, two parties choose electoral platforms to maximize the expected number of elected representatives. The platforms include public expenditure, redistributive transfers, the tax rate and...

We use a simple three-sector model to narrate the economic history of Argentina during the twentieth century as seen through the prism of its integration into and dis-integration from the world economy. Assuming that capital moves between the primary and secondary sectors more slowly than labor...

In dem Wissen, dass viele Bürger Diätenerhöhungen kritisch sehen, liegt es nahe, dass Abgeordnete ihre Diäten besser direkt nach Wahlen erhöhen als unmittelbar vor den Wahlen. In einer neuen Studie des ifo Instituts wurde anhand von Daten für 15 deutsche Bundesländer im Zeitraum...