Oriol Tejada

Welcome to my page. I am an Associate Professor with tenure (Professor Agregat) at the Faculty of Economics and Business at Universitat de Barcelona. I am also a member of the Barcelona Economic Analysis Team (BEAT) and of Game Theory and Assignment Markets (GTAM). My main research interests are on Game Theory, Political Economy, and Public Economics.  

If you want to see my complete CV please click here. You can contact me at oriol.tejada at ub.edu.

I co-organize the UB Game Theory Workshop.  I also co-organized the ETH Worskshop on democracy from 2018 to 2021, and then I became a member of its scientific committee. During 2020-2011 I also co-organized the OPESS Workshop Series.

Google scholar, twitter

Peer-Reviewed Journal Publications

[26] Optimal Democratic Mechanisms: Who Should Propose First? (with Hans Gersbach and Stephan Imhof) 

Accepted at Social Choice and Welfare

[25] Do we need a (large) committee? (with Hans Gersbach and Akaki Mamageishvili)

European Economic Review, 2025

[24] Semi-Flexible Majority Rules for Public Good Provision (with Hans Gersbach)

Social Choice and Welfare, 2024

[23] Electoral Competition with Costly Policy Changes: A Dynamic Perspective (with Hans Gersbach, Matthew Jackson, and Philippe Muller)

Journal of Economic Theory, 2023

[22] Large Elections and Interim Turnout (with Akaki Mamageishvili)

Games and Economic Behavior, 2023

[21] Appointed Learning for the Common Good: Optimal Committee Size and Monetary Transfers (with Hans Gersbach and Akaki Mamageishvili)

Games and Economic Behavior,  2022

[20] Lemons and Peaches: A (Robust) Multi-stage Buying Mechanism (with Hans Gersbach and Akaki Mamageishvili)

Mathematical Social Sciences,  2022

[19] The Effect of Handicaps on Turnout Incentives with an Application to Assessment Voting (with Hans Gersbach and Akaki Mamageishvili)

Journal of Economic Theory, 2021

[18] Channeling the Final Say in Politics: A Simple Mechanism  (with Hans Gersbach and Stephan Imhof)

Economic Theory, 2021

[17] Costs of Change and Political Polarization   (with Hans Gersbach and Philippe Muller) 

European Journal of Political Economy, 2019

[16] Coalition-Preclusion Contracts and Moderate Policies (with Hans Gersbach and Maik Schneider)

Games and Economic Behavior, 2019

[15] Graphs and (levels of) cooperation in games: Two ways how to allocate the surplus (with Mikel Álvarez-Mozos)

Mathematical Social Sciences, 2018

[14] A Reform Dilemma in Polarized Democracies (with Hans Gersbach) 

Journal of Public Economics  (find the extra material here), 2018

[13] Divide the Dollar and Conquer More: Sequential Bargaining and Risk Aversion (with Philip Grech)

International Journal of Game Theory,  2018

[12] From Hierarchies to Levels: New Solutions for Games with Hierarchical Structures (with Mikel Álvarez-Mozos, René van den Brink and Gerard van der Laan)

International Journal of Game Theory (find the extra material here), 2017

[11] Vertical Syndication-Proof Competitive Prices in Multilateral markets (with Mikel Álvarez-Mozos)

Review of Economic Design, 2016

[10] The Banzhaf Value in the Presence of Externalities  (with Mikel Álvarez-Mozos)

Social Choice and Welfare, 2015

[9] A Unifying Model for Matrix-Based Pairing Situations  (with Peter Borm and Edwin Lohmann)

Mathematical Social Sciences, 2014

[8] Complements and Substitutes in Generalized Multisided Economies

Operations Research Letters  (find the extra material here), 2013

[7] Analysis of the core of multi-sided Böhm-Bawerk assignment markets

TOP, Journal of the Spanish Society of Statistics and Operations Research,  2013

[6] Share functions for cooperative games with levels structure of cooperation (with Mikel Álvarez-Mozos, René van den Brink and Gerard van der Laan)

European Journal of Operational Research, 2013

[5] The nucleolus and the core-center of multi-sided Böhm-Bawerk assignment markets (with Marina Núñez)

Mathematical Methods of Operations Research, 2012

[4] Parallel characterizations of a generalized Shapley value and a generalized Banzhaf value for cooperative games with levels structure of cooperation  (with Mikel Álvarez-Mozos)

Decision Support Systems, 2011

[3] A differential redistributive analysis of bilinear tax reforms (with Samuel Calonge)

FinanzArchiv: Public Finance Analysis, 2011

[2] A note on competitive prices in multilateral assignment markets

Economics Bulletin, 2010

[1] Symmetrically multilateral-bargained allocations in multi-sided assignment markets  (with Carles Rafels)

International Journal of Game Theory, 2010

Conference Papers and Proceedings

[3] How Many Citizens Have Already Voted? The Role of (Interim) Turnout Rate Polls in Elections  (with Akaki Mamageishvili)

WINE 2020, International Conference on Web and Internet Economics, Papers and Proceedings, 2020

[2] Sophisticated Attacks on Decoy Ballots: A Devil's Menu (with Hans Gersbach and Akaki Mamageishvili)

WINE 2019, International Conference on Web and Internet Economics, Papers and Proceedings, 2019

[1] Election Security and Economics: It’s all about Eve (with David Basin, Hans Gersbach, Akaki Mamageishvili and Lara Schmid)

International Joint Conference on Electronic Voting (evoteID), 2017, See abstract

Submitted Papers (working paper version)

Curbing Polarization with Re-election Hurdles (with Hans Gersbach and Philippe Muller)

State: Revise and Resubmit at International Economic Review

Republic or Democracy? Co-voting! (with Hans Gersbach and Akaki Mamageishvili)

State: Second Revision Round at Mathematical Social Sciences

On the Concentration of Talent: A General Result on Superstar Effects and Matching (with Ulrich Schetter)

State: Reject and Resubmit at Journal of International Economics (see video)

Optimal Term-length and the Structure of Democracy (with Hans Gersbach and Matthew Jackson)

State: Submitted

Firm Size and Corporate Political Influence (with Stylianos Papageorgiou)

State: Submitted

Information Acquisition in Deliberative Democracies (with Gerard Domènech and Caio Lorecchio)

State: Submitted

Policy Reforms & the Amount of Checks and Balances (with Hans Gersbach and Julia Wagner)

State: Submitted

Can Democracy Cope with Extreme Views? (with Hans Gersbach and Maik Schneider)

State:Submitted

No Midcost Democracy (with Hans Gersbach and Arthur Schichl)

State:Submitted

Coming soon

One man, (possibly) one vote (with Dimitrios Xefteris)

Economics and Politics of Student Debt Relief (with Stylianos Papageorgiou)

Close elections (with Gerard Domènech and Dimitrios Xefteris)

Conditional voting subsidies (with Dimitrios Xefteris)

(Some) Current and Old Work

Re-election and Separation of Powers (with César Martinelli)

An Objective (Dual) Criterion to Compare Risky Lotteries Based on Arrow-Pratt (with Ulrich Schetter)

Resilient Democracy for Credence Goods (with Hans Gersbach and Julia Wagner)