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Title:Structural holes in social networks Author(s):GOYAL, Sanjeev; VEGA-REDONDO, FernandoDate:2007Citation: Journal of Economic Theory, 2007, 137, 1, 460-492 Type:ArticleAbstract:We consider a setting where every pair of players that undertake a transaction (e.g. exchange goods or information) creates a unit surplus. A transaction can take place only if the players involved have a connection. If ...

Title:The Pro-Competitive Effect of Campaign Limits in Non-Majoritarian Elections Author(s):IARYCZOWER, Matias; MATTOZZI, Andrea EUI affiliated

Date:2012Citation: Economic Theory, 2012, 49, 3, 591-619 Type:ArticleAbstract:We study a model of elections in non-majoritarian systems that captures the link between competition in policies and competition in campaign spending. We argue that the overall competitiveness of the political arena depends ...

Title:Characterization and uniqueness of equilibrium in competitive insurance Author(s):FARINHA LUZ, VitorDate:2015Type:Working PaperSeries/Number:EUI MWP; 2015/15Abstract:This paper provides a complete characterization of equilibria in a game-theoretic version of Rothschild and Stiglitz (1976)’s model of competitive insurance. I allow for stochastic contract offers by insurance firms and ...

Title:The Structure of the Lattices of Pure Strategy Nash Equilibria of Binary Games of Strategic Complements Author(s):RODRIGUEZ BARRAQUER, TomasDate:2012Type:Working PaperSeries/Number:EUI MWP; 2012/24Abstract:It has long been established in the literature that the set of pure strategy Nash equilibria of any binary game of strategic complements among a set N of players can be seen as a lattice on the set of all subsets of N under ...

Title:Group formation, in-group bias and the cost of cheating Author(s):MICHAELI, MotiDate:2015Type:Working PaperSeries/Number:EUI MWP; 2015/04Abstract:Group formation and in-group bias -- preferential treatment for insiders -- are widely observed social phenomena. This paper demonstrates how they arise naturally when people incur a psychological cost as the result of ...

Title:Strategic Mass Killings Author(s):ESTEBAN, Joan; MORELLI, Massimo EUI affiliated

; ROHNER, DominicDate:2010Type:Working PaperSeries/Number:EUI ECO; 2010/23Abstract:Since World War II there have been about fifty episodes of large-scale mass killings of civilians and massive forced displacements. They were usually meticulously planned and independent of military goals. We provide a ...

Title:Markets for Information: Of Inefficient Firewalls and Efficient Monopolies Author(s):CABRALES, Antonio; GOTTARDI, Piero EUI affiliated

Date:2009Type:Working PaperSeries/Number:EUI ECO; 2009/11Abstract:In this paper we study, within a formal model, market environments where information is costly to acquire and is of use also to potential competitors. Agents may then sell, or buy, reports over the information acquired and ...

Title:Friendship Selection Author(s):RIVAS, JavierDate:2007Type:Working PaperSeries/Number:EUI ECO; 2007/08Abstract:We model the formation of friendships as repeated cooperation within a set of heterogeneous players. The model builds around three of the most important facts about friendship: friends help each other, there is reciprocity ...

Title:Imitation and Selective Matching In Reputational Games Author(s):VIGNOLO, ThierryDate:2007Type:Working PaperSeries/Number:EUI ECO; 2007/31Abstract:This paper investigates imitation and selective matching in reputational games with an outside option. We identify two classes of such games, which are ultimatum and trust games. By selective matching we mean that ...

Title:Inequality Aversion and Stochastic Decision-making: Experimental Evidence from Zimbabwean Villages after Land Reform Author(s):KOHLER, StefanDate:2007Type:Working PaperSeries/Number:GPRG Working Paper; 2006/61Abstract:Inequality considerations are a motive for making positive offers in the Ultimatum Game and rejecting small ones, but decision error could have the same effect. I find evidence for both of these considerations and a ...

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