Olson vs. Coase: Coalitional worth in conflict

We analyze a model of conflict with endogenous choice of effort, wheresubsets of the contenders may force the resolution to be sequential:First the alliance fights it out with the rest and in case they win later they fight it out among themselves. For three-player games, wefind that it will not be in the interest of any two of them to form analliance. We obtain this result under two different scenarios:equidistant preferences with varying relative strengths, and vicinityof preferences with equal distribution of power. We conclude that thecommonly made assumption of super-additive coalitional worth is suspect.

Leadership in collective action

We extend the model of collective action in which groups compete for a budged by endogenizing the group platform, namely the specific mixture of public/private good and the distribution of the private good to group members which can be uniform or performance-based. While the group-optimal platform contains a degree of publicness that increases in group size and divides the private benefits uniformly, a success-maximizing leader uses incentives and distorts the platform towards more private benefits - a distortion that increases with group size. In both settings we obtain the anti-Olson type result that win probability increases with group size.

Estudi de les distàncies interpersonals: El rol del sexe com a factor regulador

Partint de la base teòrica de la proxèmica i l’espai personal, l’objectiu d’aquest treball era investigar la influència que té el sexe de l’individu i el de la persona amb la qual s’interactua en referència a la distància interpersonal. Així mateix, es pretenia esbrinar si hi ha una connexió entre el sexe i la conducta compensatòria que es realitzarà quan l’espai personal és envaït. L’estudi s’ha realitzat amb 60 joves de la Universitat de Barcelona, estudiants entre 1r i 4t de Grau en diversos estudis socials mitjançant un experiment de camp. Els resultats mostren que ambdues variables tenen una influència significativa en la regulació de l’espai personal d’un individu.