Social Choice

Social Choice theory is the study of collective decision processes, their procedures and their consequences on welfare. It studies questions such as how to aggregate individual preferences into social preferences; what the properties of different voting systems are; what the resource allocation mechanisms are that take into account the incentives of the participants. The aims of Social Choice are twofold: first, to study particular models that are important for its application to real life (such as the study of the outcomes obtained by run-off voting systems); and second, to take a normative point of view in designing ideal systems (such as the design of decentralized allocation mechanism for the allocation of public goods or institutional design). The tools used range from axioms to game theory.

Article On obvious strategy-proofness and single-peakedness R. Pablo Arribillaga, Jordi Massó, Alejandro Neme We characterize the set of all obviously strategy-proof and onto social choice \| READ MORE ...	Article Preference profiles for efficiency, fairness, and consistency in school choice problems Eun Jeong Heo We study the school choice problem in which a school district assigns school \| READ MORE ...	Working paper Daunou’s Voting Method Salvador Barberà, Walter Bossert and Kotaro Suzumura Pierre Daunou, a contemporary of Borda and Condorcet during the era of the \| READ MORE ...
Working paper All Sequential Allotment Rules Are Obviously Strategy-Proof R. Pablo Arribillaga, Jordi Massó and Alejandro Neme For the division problem with single-peaked preferences (Sprumont, 1991) we \| READ MORE ...	Working paper The Degree Ratio Ranking Method for Directed Networks René van den Brink, Agnieszka Rusinowska One of the most famous ranking methods for digraphs is the ranking by Copeland \| READ MORE ...	Article Dynamic competition over social networks Antoine Mandel, Xavier Venel We propose an analytical approach to the problem of influence maximization in a \| READ MORE ...
Article Vote-motivated candidates Constantine Sorokin, Alexei Zakharov We study stochastic voting models where the candidates are allowed to have any \| READ MORE ...	Article Cooperation in the Climate Commons Stefano Carattini, Simon Levin, Alessandro Tavoni Climate change is a global externality that has proven difficult to address \| READ MORE ...	Article Adaptive Learning in Weighted Network Games Péter Bayer, P. Jean-Jacques Herings, Ronald Peeters, Frank Thuijsman This paper studies adaptive learning in the class of weighted network games. \| READ MORE ...
Social Design. Essays in Memory of Leonid Hurwicz We recommend this new book which contains articles by several contributors from \| READ MORE ...	Article Information aggregation with a continuum of types Irem Bozbay, Hans Peters We study the problem of designing a voting rule which makes voting by cut-off \| READ MORE ...	Working paper Arrow on domain conditions: a fruitful road to travel Salvador Barberà, Dolors Berga and Bernardo Moreno We stress the importance that Arrow attached to studying the role of domain \| READ MORE ...
Working paper Anti-Conformism in the threshold Model of Collective Behavior Michel Grabisch, Fen Li We provide a first study of the threshold model, where both conformist and anti \| READ MORE ...	From theory to application Network Effects in Crowdfunding Paul Belleflamme, Thomas Lambert and Armin Schwienbacher The advances in FinTech are concomitant with the development of digital \| READ MORE ...	Working paper Foreign Influence and Domestic Policy: A Survey Toke S. Aidt, Facundo Albornoz and Esther Hauk In an interconnected world, economic and political interests inevitably reach \| READ MORE ...
Working paper Foreign Influence and Domestic Policy: A Survey Toke S. Aidt, Facundo Albornoz and Esther Hauk In an interconnected world, economic and political interests inevitably reach \| READ MORE ...	Working paper An experimental study of parternship formation in social networks Francis Bloch, Bhaskar Dutta, Stéphane Robin, Min Zhu This paper reports on laboratory experiments on the formation of partnerships \| READ MORE ...	Article Valence influence in electoral competition with rank objectives Alexander Shapoval, Shlomo Weber, Alexei Zakharov In this paper we examine the effects of valence in a continuous spatial voting \| READ MORE ...
Article Strong implementation with partially honest individuals Foivos Savva In this paper we provide sufficient conditions for a social choice rule to be \| READ MORE ...	Book Axioms of Cooperative Decision Making Hervé Moulin Problems of fair division, equitable cost-sharing, division of a joint benefit \| READ MORE ...	Book Connections. An Introduction to the Economics of Networks Sanjeev Goyal Networks pervade social and economic life, and they play a prominent role in \| READ MORE ...
Article Dividing bads under additive utilities Anna Bogomolnaia, Hervé Moulin, Fedor Sandomirskiy, Elena Yanovskaia We compare the Egalitarian rule (aka Egalitarian Equivalent) and the \| READ MORE ...	Working paper Partially-honest Nash implementation: a full characterization Michele Lombardi, Naoki Yoshihara A partially-honest individual is a person who follows the maxim, "Do not \| READ MORE ...	Article Fair social decision under uncertainty and belief disagreements Takashi Hayashi and Michele Lombardi This paper aims to address two issues related to simultaneous aggregation of \| READ MORE ...
Working paper Regime Change in Large Information Networks Joan de Martí and Pau Milán We study global games of regime change within networks of truthful \| READ MORE ...	Article Occupational choice with endogenous spillovers Facundo Albornoz, Antonio Cabrales, Esther Hauk We study a model that integrates productive and socializing efforts with \| READ MORE ...	Other Multidimensional free-mobility equilibrium: Tiebout revisited Alexey Savvateev, Constantine Sorokin, Shlomo Weber The paper provides consistent mathematical framework for seminal Tiebout free- \| READ MORE ...
From theory to application Gender and collaboration in research Anja Prummer Gender inequality in the workplace has attracted considerable attention in \| READ MORE ...	Working paper Self-implementation of social choice correspondences in strong Equilibrium Bezalel Peleg, Hans Peters A social choice correspondence is self-implementable in strong equilibrium if \| READ MORE ...	Working paper Random social choice functions for single-peaked domains on trees Hans Peters, Souvik Roy, Soumyarup Sadhukhan Finitely many agents have single-peaked preferences on a finite set of \| READ MORE ...
Working paper Approval voting and Shapley ranking Pierre Dehez and Victor Ginsburgh Approval voting allows voters to list any number of candidates. Their scores \| READ MORE ...	Article On the advantages and disadvantages of being the first mover under rules of k names Salvador Barberà, Danilo Coelho Rules of k names are methods that allow two potentially conflicting parties to \| READ MORE ...	Article Learning matters: Reappraising object allocation rules when agents strategically investigate Patrick Harless, Vikram Manjunath Individuals form preferences through search, interviews, discussion, and \| READ MORE ...
Article Self-fulfilling Mistakes: Characterisation and Welfare Patricio S. Dalton, Sayantan Ghosal This article incorporates self-fulfilling mistakes into an otherwise classical \| READ MORE ...	Article The most ordinally-egalitarian of random voting rules Anna Bogomolnaia Aziz and Stursberg propose an “Egalitarian Simultaneous Reservation” rule (ESR \| READ MORE ...	Working paper To mix or not to mix? Diffusion in groups Segismundo S. Izquierdo, Luis R. Izquierdo and Dunia Lopez-Pintado The outbreak of epidemics, the rise of religious radicalization, or the \| READ MORE ...
Working paper Inside the Engine Room of Digital Platforms: Reviews, Ratings, and Recommendations Paul Belleflamme, Martin Peitz The rise and success of digital platforms (such as Airbnb, Amazon, Booking, \| READ MORE ...	Working paper The role of domain restrictions in mechanism design: ex post incentive compatibility and Pareto efficiency Salvador Barberà, Dolors Berga and Bernardo Moreno The possibility of designing efficient, ex-post incentive compatible, single \| READ MORE ...	Working paper Deliberative Structures and their Impact on Voting Behavior under Social Conflict Jordi Brandts, Leonie Gerhards and Lydia Mechtenberg Inequalities in democracies are multi-faceted. They not only incorporate \| READ MORE ...
Article Competitive division of a mixed manna Anna Bogomolnaia, Hervé Moulin, Fedor Sandomirskiy, Elena Yanovsk A mixed manna contains goods (that everyone likes) and bads (that everyone \| READ MORE ...	Article Gender Differences in Sorting Luca Paolo Merlino, Dario Pozzoli, Pierpaolo Parrotta In this paper, we investigate gender differences in workers' career \| READ MORE ...	Article Comparing Voting by Committees According to Their Manipulability R. Pablo Arribillaga and Jordi Masso We consider the class of voting by committees to be used by a society to \| READ MORE ...
Article On societies choosing social outcomes, and their memberships: internal stability and consistency Gustavo Bergantiños, Jordi Massó, Alejandro Neme We consider a society whose members have to choose not only an outcome from a \| READ MORE ...	From theory to application “Naming and shaming” of individuals and groups in a public goods experiment Sven Christens and Astrid Dannenberg People often behave more socially oriented when their actions are observable by \| READ MORE ...	Article Existence of share equilibrium in symmetric local public good economies A.van den Nouweland, M.Wooders Share equilibrium was introduced in van den Nouweland and Wooders (2011) as an \| READ MORE ...
From theory to application Social Media: The Fifth Estate Monica Anna Giovanniello .	Article Immunity to credible deviations from the truth Salvador Barberà, Dolors Berga, Bernardo Moreno We study a notion of non-manipulability by groups, based on the idea that only \| READ MORE ...	Article The most ordinally egalitarian of random voting rules Anna Bogomolnaia Aziz and Stursberg propose an “Egalitarian Simultaneous Reservation” rule (ESR \| READ MORE ...
Article On societies choosing social outcomes, and their memberships: strategy-proofness Gustavo Bergantiños, Jordi Massó, Alejandro Neme We consider a society whose members have to choose not only an outcome from a \| READ MORE ...	Working paper Choice with Time João V. Ferreira, Nicolas Gravel We propose a framework for the analysis of choice behavior when the later \| READ MORE ...	Working paper Promotion through Connections: Favors or Information? Yann Bramoullé, Kenan Huremovic Connections appear to be helpful in many contexts such as obtaining a job, a \| READ MORE ...
Working paper A Shut Mouth Catches No Flies: Consideration of Issues and Voting Salvador Barberà and Anke Gerber We study collective decision-making procedures involving the formation of an \| READ MORE ...	Working paper Farsighted Stability with Heterogeneous Expectations Francis Bloch, Anne van den Nouweland This paper analyzes farsighted stable sets when agents have heterogeneous \| READ MORE ...	Working paper Tragedy of the Commons and Evolutionary Games in Social Networks: The Economics of Social Punishment Jorge Marco, Renan Goetz This study revisits the problem of the tragedy of the commons. Extracting \| READ MORE ...
Working paper Mechanisms with Referrals: VCG Mechanisms and Multilevel Mechanisms Joosung Lee We study mechanisms for environments in which only some of the agents are \| READ MORE ...	From theory to application Overweighting nations: optimal voting rules under participation constraints Antonin Macé and Rafael Treibich The recent vote on the Brexit, and the withdrawal of the US from the Paris \| READ MORE ...	Article Sharing the cost of risky projects Jens Leth Hougaard, Hervé Moulin Users share the cost of unreliable non-rival projects (items). For instance, \| READ MORE ...
Article Preferences for redistribution and social structure Erik Schokkaert, Tom Truyts We model inter-individual differences in preferences for redistribution as a \| READ MORE ...	Working paper Dynamic competition over social networks Antoine Mandel, Xavier Venel We provide an analytical approach to the problem of influence maximization in a \| READ MORE ...	Article Peripheral diversity: transfers versus public goods Klaus Desmet, Ignacio Ortuño-Ortín, Shlomo Weber This paper advances the hypothesis that in societies that suffer from \| READ MORE ...
Working paper Condorcet Jury Theorem and Cognitive Hierarchies: Theory and Experiments Yukio Koriyama, Ali Ihsan Ozkes An information aggregation problem of the Condorcet Jury Theorem is considered \| READ MORE ...	Article Endowment additivity and the weighted proportional rules for adjudicating conflicting claims Patrick Harless We propose and study a new axiom, restricted endowment additivity, for the \| READ MORE ...	Article The Missing Transfers: Estimating Misreporting in Dyadic Data Margherita Comola, Marcel Fafchamps Many studies have used self-reported dyadic data without exploiting the pattern \| READ MORE ...
Working paper A Model of Protests, Revolution, and Information Salvador Barberà and Matthew O. Jackson A revolt or protest succeeds only if sufficient people participate. We study \| READ MORE ...	Working paper Sorting in public school districts under the Boston Mechanism Caterina Calsamiglia, Francisco Martinez-Mora and Antonio Miralles We study the extent to which the widely used Boston Mecha- nism (BM) fosters \| READ MORE ...	Article Feasible elimination procedures in social choice: An axiomatic characterization Bezalel Peleg, Hans Peters Feasible elimination procedures (Peleg, 1978) play a central role in \| READ MORE ...
Dutch Social Choice Colloquium in honour of Kenneth J. Arrow Constanze Binder, Burak Can and Ulle Endriss are the organisers of the Dutch \| READ MORE ...	Working paper The Swing Voter's Curse in Social Networks Berno Buechel, Lydia Mechtenberg We study private communication in social networks prior to a majority vote on \| READ MORE ...	Working paper Computational aspects of assigning agents to a line Haris Aziz, Jens Leth Hougaard, Juan D. Moreno-Ternero, Lars Peter Østerdal We consider the problem of assigning agents to slots on a line, where only one \| READ MORE ...
Article Implementation in stochastic dominance Nash equilibria Eun Jeong Heo, Vikram Manjunath We study solutions that choose lotteries for profiles of preferences defined \| READ MORE ...	Article When Do Types Induce the Same Belief Hierarchy? Andrés Perea and Willemien Kets Type structures are a simple device to describe higher-order beliefs. However, \| READ MORE ...	Article On the disclosure of ticket sales in charitable lotteries Damian S. Damianov, Ronald Peeters We show that a policy of disclosing the ticket sales during a fundraising \| READ MORE ...
Article Cheap Talk with Multiple Strategically Interacting Audiences: An Experimental Study Xinyu Li, Ronald Peeters We consider a cheap-talk setting that mimics the situation where an incumbent \| READ MORE ...	Article Implementation in partial equilibrium Takashi Hayashi, Michele Lombardi Consider a society with a finite number of sectors (social issues or \| READ MORE ...	Article Conundrums for nonconsequentialists John A. Weymark There are a number of single-profile impossibility theorems in social choice \| READ MORE ...
Article Self-fulfilling Mistakes: Characterization and Welfare Patricio S. Dalton, Sayantan Ghosal This paper incorporates self-fulfilling mistakes into an otherwise classical \| READ MORE ...	Article Who benefits from increased competition among sellers on B2C platforms? Paul Belleflamme, Eric Toulemonde We introduce within-group external effects in the two-sided singlehoming model \| READ MORE ...	Article Gale-Nikaido-Debreu and Milgrom-Shannon: Communal interactions with endogenous community structures Daniil Musatov, Alexei Savvateev, Shlomo Weber This paper examines Nash jurisdictional stability in a model with a continuum \| READ MORE ...
From theory to application Segregation and the Perception of the Minority Florent Dubois, Christophe Muller .	Working paper Feasible elimination procedures in social choice: an axiomatic characterization Bezalel Peleg, Hans J.M. Peters Feasible elimination procedures Peleg, 1978 play a central role in constructing \| READ MORE ...	Article Justice Under Uncertainty Elena Cettolin, Arno Riedl Uncertain outcomes are an inevitable feature of policy choices and their public \| READ MORE ...
Article Strategic party formation on a circle and Duverger’s Law Ronald Peeters, Rene Saran, Ayşe Müge Yüksel Duverger’s Law states that plurality rule tends to favor a two-party system. We \| READ MORE ...	Working paper Immunity to Credible Deviations from the Truth Salvador Barberà, Dolors Berga and Bernardo Moreno We introduce a new notion of non-manipulability by groups, based on the idea \| READ MORE ...	Working paper Information Disclosure under Strategy-proof Voting Rules Salvador Barberà, Antonio Nicolò We consider collective decision problems where some agents have private \| READ MORE ...
Working paper Network-Constrained Risk Sharing in Village Economies Pau Milan In this paper I investigate mutual insurance arrangements restricted on a \| READ MORE ...	Working paper Values for Environments with Externalities - The Average Approach Inés Macho-Stadler, David Pérez-Castrillo and David Wettstein We propose the average approach,where the worth of a coalition is a weighted \| READ MORE ...	Article Trust and manipulation in social networks Manuel Förster, Ana Mauleon, Vincent Vannetelbosch We investigate the role of manipulation in boundedly rational opinion dynamics \| READ MORE ...
CORE Nobel Talks: Jean TIROLE As part of 50 Days @ CORE, the Center of Operations Research and Econometrics ( \| READ MORE ...	Working paper The Principle of Minimum Differentiation Revisited: Return of the Median Voter Nobuyuki Hanaki, Emily Tanimura, Nicolaas J. Vriend We study a linear location model (Hotelling, 1929) in which n (with n ≥ 2) \| READ MORE ...	Working paper Determining influential models Michel Grabisch, Agnieszka Rusinowska We consider a model of opinion formation based on aggregation functions. Each \| READ MORE ...
Working paper Sequential implementation without commitment Takashi Hayashi and Michele Lombardi In a finite-horizon intertemporal setting, in which society needs to decide and \| READ MORE ...	Working paper Implementation in partial equilibrium Takashi Hayashi and Michele Lombardi Consider a society with a finite number of sectors (social issues or \| READ MORE ...	Working paper Keeping up with the e-Joneses: Do Online Social Networks Raise Social Comparisons? Fabio Sabatini, Francesco Sarracino Online social networks, such as Facebook, disclose an unprecedented volume of \| READ MORE ...
Article Identity, homophily and in-group bias Sergio Currarini, Friederike Mengel Many instances of social interaction display either or both of the following \| READ MORE ...	Article Learning with communication barriers due to overconfidence. What "model-to-model analysis" can add to the understanding of a problem Juliette Rouchier, Emily Tanimura In this paper, we describe a process of validation for an already published \| READ MORE ...	Article Group Strategy-Proofness in Private good Economies Salvador Barberà, Dolors Berga, Bernardo Moreno Many salient rules to allocate private goods are not only strategy-proof, but \| READ MORE ...
Article Measuring rank mobility with variable population size Walter Bossert, Burak Can, Conchita D’Ambrosio We provide a characterization of a class of rank-mobility measures. These \| READ MORE ...	Working paper Democracy for Polarized Committees: The Tale of Blotto's Lieutenants Alessandra Casella, Jean-François Laslier, Antonin Macé In a polarized committee, majority voting disenfranchises the minority. By \| READ MORE ...	Working paper An Extreme Point Characterization of Strategy-proof and Unanimous Probabilistic Rules over Binary Restricted Domains Hans Peters, Souvik Roy, Soumyarup Sadhukhan, Ton Storcken We show that every strategy-proof and unanimous probabilistic rule on a binary \| READ MORE ...
Article Entropy, desegregation, and proportional rationing Hervé Moulin An assignment of students to schools displays zero-segregation if all schools \| READ MORE ...

Article On obvious strategy-proofness and single-peakedness R. Pablo Arribillaga, Jordi Massó, Alejandro Neme We characterize the set of all obviously strategy-proof and onto social choice \| READ MORE ...	Article Preference profiles for efficiency, fairness, and consistency in school choice problems Eun Jeong Heo We study the school choice problem in which a school district assigns school \| READ MORE ...	Working paper Daunou’s Voting Method Salvador Barberà, Walter Bossert and Kotaro Suzumura Pierre Daunou, a contemporary of Borda and Condorcet during the era of the \| READ MORE ...
Working paper All Sequential Allotment Rules Are Obviously Strategy-Proof R. Pablo Arribillaga, Jordi Massó and Alejandro Neme For the division problem with single-peaked preferences (Sprumont, 1991) we \| READ MORE ...	Working paper The Degree Ratio Ranking Method for Directed Networks René van den Brink, Agnieszka Rusinowska One of the most famous ranking methods for digraphs is the ranking by Copeland \| READ MORE ...	Article Dynamic competition over social networks Antoine Mandel, Xavier Venel We propose an analytical approach to the problem of influence maximization in a \| READ MORE ...
Article Vote-motivated candidates Constantine Sorokin, Alexei Zakharov We study stochastic voting models where the candidates are allowed to have any \| READ MORE ...	Article Cooperation in the Climate Commons Stefano Carattini, Simon Levin, Alessandro Tavoni Climate change is a global externality that has proven difficult to address \| READ MORE ...	Article Adaptive Learning in Weighted Network Games Péter Bayer, P. Jean-Jacques Herings, Ronald Peeters, Frank Thuijsman This paper studies adaptive learning in the class of weighted network games. \| READ MORE ...
Social Design. Essays in Memory of Leonid Hurwicz We recommend this new book which contains articles by several contributors from \| READ MORE ...	Article Information aggregation with a continuum of types Irem Bozbay, Hans Peters We study the problem of designing a voting rule which makes voting by cut-off \| READ MORE ...	Working paper Arrow on domain conditions: a fruitful road to travel Salvador Barberà, Dolors Berga and Bernardo Moreno We stress the importance that Arrow attached to studying the role of domain \| READ MORE ...
Working paper Anti-Conformism in the threshold Model of Collective Behavior Michel Grabisch, Fen Li We provide a first study of the threshold model, where both conformist and anti \| READ MORE ...	From theory to application Network Effects in Crowdfunding Paul Belleflamme, Thomas Lambert and Armin Schwienbacher The advances in FinTech are concomitant with the development of digital \| READ MORE ...	Working paper Foreign Influence and Domestic Policy: A Survey Toke S. Aidt, Facundo Albornoz and Esther Hauk In an interconnected world, economic and political interests inevitably reach \| READ MORE ...
Working paper Foreign Influence and Domestic Policy: A Survey Toke S. Aidt, Facundo Albornoz and Esther Hauk In an interconnected world, economic and political interests inevitably reach \| READ MORE ...	Working paper An experimental study of parternship formation in social networks Francis Bloch, Bhaskar Dutta, Stéphane Robin, Min Zhu This paper reports on laboratory experiments on the formation of partnerships \| READ MORE ...	Article Valence influence in electoral competition with rank objectives Alexander Shapoval, Shlomo Weber, Alexei Zakharov In this paper we examine the effects of valence in a continuous spatial voting \| READ MORE ...
Article Strong implementation with partially honest individuals Foivos Savva In this paper we provide sufficient conditions for a social choice rule to be \| READ MORE ...	Book Axioms of Cooperative Decision Making Hervé Moulin Problems of fair division, equitable cost-sharing, division of a joint benefit \| READ MORE ...	Book Connections. An Introduction to the Economics of Networks Sanjeev Goyal Networks pervade social and economic life, and they play a prominent role in \| READ MORE ...
Article Dividing bads under additive utilities Anna Bogomolnaia, Hervé Moulin, Fedor Sandomirskiy, Elena Yanovskaia We compare the Egalitarian rule (aka Egalitarian Equivalent) and the \| READ MORE ...	Working paper Partially-honest Nash implementation: a full characterization Michele Lombardi, Naoki Yoshihara A partially-honest individual is a person who follows the maxim, "Do not \| READ MORE ...	Article Fair social decision under uncertainty and belief disagreements Takashi Hayashi and Michele Lombardi This paper aims to address two issues related to simultaneous aggregation of \| READ MORE ...
Working paper Regime Change in Large Information Networks Joan de Martí and Pau Milán We study global games of regime change within networks of truthful \| READ MORE ...	Article Occupational choice with endogenous spillovers Facundo Albornoz, Antonio Cabrales, Esther Hauk We study a model that integrates productive and socializing efforts with \| READ MORE ...	Other Multidimensional free-mobility equilibrium: Tiebout revisited Alexey Savvateev, Constantine Sorokin, Shlomo Weber The paper provides consistent mathematical framework for seminal Tiebout free- \| READ MORE ...
From theory to application Gender and collaboration in research Anja Prummer Gender inequality in the workplace has attracted considerable attention in \| READ MORE ...	Working paper Self-implementation of social choice correspondences in strong Equilibrium Bezalel Peleg, Hans Peters A social choice correspondence is self-implementable in strong equilibrium if \| READ MORE ...	Working paper Random social choice functions for single-peaked domains on trees Hans Peters, Souvik Roy, Soumyarup Sadhukhan Finitely many agents have single-peaked preferences on a finite set of \| READ MORE ...
Working paper Approval voting and Shapley ranking Pierre Dehez and Victor Ginsburgh Approval voting allows voters to list any number of candidates. Their scores \| READ MORE ...	Article On the advantages and disadvantages of being the first mover under rules of k names Salvador Barberà, Danilo Coelho Rules of k names are methods that allow two potentially conflicting parties to \| READ MORE ...	Article Learning matters: Reappraising object allocation rules when agents strategically investigate Patrick Harless, Vikram Manjunath Individuals form preferences through search, interviews, discussion, and \| READ MORE ...
Article Self-fulfilling Mistakes: Characterisation and Welfare Patricio S. Dalton, Sayantan Ghosal This article incorporates self-fulfilling mistakes into an otherwise classical \| READ MORE ...	Article The most ordinally-egalitarian of random voting rules Anna Bogomolnaia Aziz and Stursberg propose an “Egalitarian Simultaneous Reservation” rule (ESR \| READ MORE ...	Working paper To mix or not to mix? Diffusion in groups Segismundo S. Izquierdo, Luis R. Izquierdo and Dunia Lopez-Pintado The outbreak of epidemics, the rise of religious radicalization, or the \| READ MORE ...
Working paper Inside the Engine Room of Digital Platforms: Reviews, Ratings, and Recommendations Paul Belleflamme, Martin Peitz The rise and success of digital platforms (such as Airbnb, Amazon, Booking, \| READ MORE ...	Working paper The role of domain restrictions in mechanism design: ex post incentive compatibility and Pareto efficiency Salvador Barberà, Dolors Berga and Bernardo Moreno The possibility of designing efficient, ex-post incentive compatible, single \| READ MORE ...	Working paper Deliberative Structures and their Impact on Voting Behavior under Social Conflict Jordi Brandts, Leonie Gerhards and Lydia Mechtenberg Inequalities in democracies are multi-faceted. They not only incorporate \| READ MORE ...
Article Competitive division of a mixed manna Anna Bogomolnaia, Hervé Moulin, Fedor Sandomirskiy, Elena Yanovsk A mixed manna contains goods (that everyone likes) and bads (that everyone \| READ MORE ...	Article Gender Differences in Sorting Luca Paolo Merlino, Dario Pozzoli, Pierpaolo Parrotta In this paper, we investigate gender differences in workers' career \| READ MORE ...	Article Comparing Voting by Committees According to Their Manipulability R. Pablo Arribillaga and Jordi Masso We consider the class of voting by committees to be used by a society to \| READ MORE ...
Article On societies choosing social outcomes, and their memberships: internal stability and consistency Gustavo Bergantiños, Jordi Massó, Alejandro Neme We consider a society whose members have to choose not only an outcome from a \| READ MORE ...	From theory to application “Naming and shaming” of individuals and groups in a public goods experiment Sven Christens and Astrid Dannenberg People often behave more socially oriented when their actions are observable by \| READ MORE ...	Article Existence of share equilibrium in symmetric local public good economies A.van den Nouweland, M.Wooders Share equilibrium was introduced in van den Nouweland and Wooders (2011) as an \| READ MORE ...
From theory to application Social Media: The Fifth Estate Monica Anna Giovanniello .	Article Immunity to credible deviations from the truth Salvador Barberà, Dolors Berga, Bernardo Moreno We study a notion of non-manipulability by groups, based on the idea that only \| READ MORE ...	Article The most ordinally egalitarian of random voting rules Anna Bogomolnaia Aziz and Stursberg propose an “Egalitarian Simultaneous Reservation” rule (ESR \| READ MORE ...
Article On societies choosing social outcomes, and their memberships: strategy-proofness Gustavo Bergantiños, Jordi Massó, Alejandro Neme We consider a society whose members have to choose not only an outcome from a \| READ MORE ...	Working paper Choice with Time João V. Ferreira, Nicolas Gravel We propose a framework for the analysis of choice behavior when the later \| READ MORE ...	Working paper Promotion through Connections: Favors or Information? Yann Bramoullé, Kenan Huremovic Connections appear to be helpful in many contexts such as obtaining a job, a \| READ MORE ...
Working paper A Shut Mouth Catches No Flies: Consideration of Issues and Voting Salvador Barberà and Anke Gerber We study collective decision-making procedures involving the formation of an \| READ MORE ...	Working paper Farsighted Stability with Heterogeneous Expectations Francis Bloch, Anne van den Nouweland This paper analyzes farsighted stable sets when agents have heterogeneous \| READ MORE ...	Working paper Tragedy of the Commons and Evolutionary Games in Social Networks: The Economics of Social Punishment Jorge Marco, Renan Goetz This study revisits the problem of the tragedy of the commons. Extracting \| READ MORE ...
Working paper Mechanisms with Referrals: VCG Mechanisms and Multilevel Mechanisms Joosung Lee We study mechanisms for environments in which only some of the agents are \| READ MORE ...	From theory to application Overweighting nations: optimal voting rules under participation constraints Antonin Macé and Rafael Treibich The recent vote on the Brexit, and the withdrawal of the US from the Paris \| READ MORE ...	Article Sharing the cost of risky projects Jens Leth Hougaard, Hervé Moulin Users share the cost of unreliable non-rival projects (items). For instance, \| READ MORE ...
Article Preferences for redistribution and social structure Erik Schokkaert, Tom Truyts We model inter-individual differences in preferences for redistribution as a \| READ MORE ...	Working paper Dynamic competition over social networks Antoine Mandel, Xavier Venel We provide an analytical approach to the problem of influence maximization in a \| READ MORE ...	Article Peripheral diversity: transfers versus public goods Klaus Desmet, Ignacio Ortuño-Ortín, Shlomo Weber This paper advances the hypothesis that in societies that suffer from \| READ MORE ...
Working paper Condorcet Jury Theorem and Cognitive Hierarchies: Theory and Experiments Yukio Koriyama, Ali Ihsan Ozkes An information aggregation problem of the Condorcet Jury Theorem is considered \| READ MORE ...	Article Endowment additivity and the weighted proportional rules for adjudicating conflicting claims Patrick Harless We propose and study a new axiom, restricted endowment additivity, for the \| READ MORE ...	Article The Missing Transfers: Estimating Misreporting in Dyadic Data Margherita Comola, Marcel Fafchamps Many studies have used self-reported dyadic data without exploiting the pattern \| READ MORE ...
Working paper A Model of Protests, Revolution, and Information Salvador Barberà and Matthew O. Jackson A revolt or protest succeeds only if sufficient people participate. We study \| READ MORE ...	Working paper Sorting in public school districts under the Boston Mechanism Caterina Calsamiglia, Francisco Martinez-Mora and Antonio Miralles We study the extent to which the widely used Boston Mecha- nism (BM) fosters \| READ MORE ...	Article Feasible elimination procedures in social choice: An axiomatic characterization Bezalel Peleg, Hans Peters Feasible elimination procedures (Peleg, 1978) play a central role in \| READ MORE ...
Dutch Social Choice Colloquium in honour of Kenneth J. Arrow Constanze Binder, Burak Can and Ulle Endriss are the organisers of the Dutch \| READ MORE ...	Working paper The Swing Voter's Curse in Social Networks Berno Buechel, Lydia Mechtenberg We study private communication in social networks prior to a majority vote on \| READ MORE ...	Working paper Computational aspects of assigning agents to a line Haris Aziz, Jens Leth Hougaard, Juan D. Moreno-Ternero, Lars Peter Østerdal We consider the problem of assigning agents to slots on a line, where only one \| READ MORE ...
Article Implementation in stochastic dominance Nash equilibria Eun Jeong Heo, Vikram Manjunath We study solutions that choose lotteries for profiles of preferences defined \| READ MORE ...	Article When Do Types Induce the Same Belief Hierarchy? Andrés Perea and Willemien Kets Type structures are a simple device to describe higher-order beliefs. However, \| READ MORE ...	Article On the disclosure of ticket sales in charitable lotteries Damian S. Damianov, Ronald Peeters We show that a policy of disclosing the ticket sales during a fundraising \| READ MORE ...
Article Cheap Talk with Multiple Strategically Interacting Audiences: An Experimental Study Xinyu Li, Ronald Peeters We consider a cheap-talk setting that mimics the situation where an incumbent \| READ MORE ...	Article Implementation in partial equilibrium Takashi Hayashi, Michele Lombardi Consider a society with a finite number of sectors (social issues or \| READ MORE ...	Article Conundrums for nonconsequentialists John A. Weymark There are a number of single-profile impossibility theorems in social choice \| READ MORE ...
Article Self-fulfilling Mistakes: Characterization and Welfare Patricio S. Dalton, Sayantan Ghosal This paper incorporates self-fulfilling mistakes into an otherwise classical \| READ MORE ...	Article Who benefits from increased competition among sellers on B2C platforms? Paul Belleflamme, Eric Toulemonde We introduce within-group external effects in the two-sided singlehoming model \| READ MORE ...	Article Gale-Nikaido-Debreu and Milgrom-Shannon: Communal interactions with endogenous community structures Daniil Musatov, Alexei Savvateev, Shlomo Weber This paper examines Nash jurisdictional stability in a model with a continuum \| READ MORE ...
From theory to application Segregation and the Perception of the Minority Florent Dubois, Christophe Muller .	Working paper Feasible elimination procedures in social choice: an axiomatic characterization Bezalel Peleg, Hans J.M. Peters Feasible elimination procedures Peleg, 1978 play a central role in constructing \| READ MORE ...	Article Justice Under Uncertainty Elena Cettolin, Arno Riedl Uncertain outcomes are an inevitable feature of policy choices and their public \| READ MORE ...
Article Strategic party formation on a circle and Duverger’s Law Ronald Peeters, Rene Saran, Ayşe Müge Yüksel Duverger’s Law states that plurality rule tends to favor a two-party system. We \| READ MORE ...	Working paper Immunity to Credible Deviations from the Truth Salvador Barberà, Dolors Berga and Bernardo Moreno We introduce a new notion of non-manipulability by groups, based on the idea \| READ MORE ...	Working paper Information Disclosure under Strategy-proof Voting Rules Salvador Barberà, Antonio Nicolò We consider collective decision problems where some agents have private \| READ MORE ...
Working paper Network-Constrained Risk Sharing in Village Economies Pau Milan In this paper I investigate mutual insurance arrangements restricted on a \| READ MORE ...	Working paper Values for Environments with Externalities - The Average Approach Inés Macho-Stadler, David Pérez-Castrillo and David Wettstein We propose the average approach,where the worth of a coalition is a weighted \| READ MORE ...	Article Trust and manipulation in social networks Manuel Förster, Ana Mauleon, Vincent Vannetelbosch We investigate the role of manipulation in boundedly rational opinion dynamics \| READ MORE ...
CORE Nobel Talks: Jean TIROLE As part of 50 Days @ CORE, the Center of Operations Research and Econometrics ( \| READ MORE ...	Working paper The Principle of Minimum Differentiation Revisited: Return of the Median Voter Nobuyuki Hanaki, Emily Tanimura, Nicolaas J. Vriend We study a linear location model (Hotelling, 1929) in which n (with n ≥ 2) \| READ MORE ...	Working paper Determining influential models Michel Grabisch, Agnieszka Rusinowska We consider a model of opinion formation based on aggregation functions. Each \| READ MORE ...
Working paper Sequential implementation without commitment Takashi Hayashi and Michele Lombardi In a finite-horizon intertemporal setting, in which society needs to decide and \| READ MORE ...	Working paper Implementation in partial equilibrium Takashi Hayashi and Michele Lombardi Consider a society with a finite number of sectors (social issues or \| READ MORE ...	Working paper Keeping up with the e-Joneses: Do Online Social Networks Raise Social Comparisons? Fabio Sabatini, Francesco Sarracino Online social networks, such as Facebook, disclose an unprecedented volume of \| READ MORE ...
Article Identity, homophily and in-group bias Sergio Currarini, Friederike Mengel Many instances of social interaction display either or both of the following \| READ MORE ...	Article Learning with communication barriers due to overconfidence. What "model-to-model analysis" can add to the understanding of a problem Juliette Rouchier, Emily Tanimura In this paper, we describe a process of validation for an already published \| READ MORE ...	Article Group Strategy-Proofness in Private good Economies Salvador Barberà, Dolors Berga, Bernardo Moreno Many salient rules to allocate private goods are not only strategy-proof, but \| READ MORE ...
Article Measuring rank mobility with variable population size Walter Bossert, Burak Can, Conchita D’Ambrosio We provide a characterization of a class of rank-mobility measures. These \| READ MORE ...	Working paper Democracy for Polarized Committees: The Tale of Blotto's Lieutenants Alessandra Casella, Jean-François Laslier, Antonin Macé In a polarized committee, majority voting disenfranchises the minority. By \| READ MORE ...	Working paper An Extreme Point Characterization of Strategy-proof and Unanimous Probabilistic Rules over Binary Restricted Domains Hans Peters, Souvik Roy, Soumyarup Sadhukhan, Ton Storcken We show that every strategy-proof and unanimous probabilistic rule on a binary \| READ MORE ...
Article Entropy, desegregation, and proportional rationing Hervé Moulin An assignment of students to schools displays zero-segregation if all schools \| READ MORE ...

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