This paper studies the vulnerability of the pivotal mechanism with respect to manipulation by groups. In a lab experiment, groups decide on the implementation of various alternatives, some of which imply opposite interests for the two subgroups. We investigate the occurrence of tacit and...

Often preferences of agents are such that any sensible goal of the collective must admit a tie between all alternatives. The standard formulation in mechanism design demand that in this case all alternatives are equilibrium outcomes of the social choice mechanism. However, as far as the idea of...

Sustainability is a fairly old concept, born in the 18th century in the field of forestry, within a mono-functionality perspective. The concept has considerably evolved in the last few years towards a multi-functionality context, with applications reported in practically all areas of economic...

In recent years, understanding the structure and function of complex networks has become the foundation for explaining many different real- world complex biological, technological and informal social phenomena. Techniques from statistical physics have been successfully applied to the analysis of...

This paper looks at how the reputation of a monetary policy-making committee is jointly determined with the reputations of its individual members. I ask whether individuals have more or less incentive to gain a reputation for being tough on inflation when they are part of a group. I examine the...

In this paper, we review and compare the main power indices to be found in the literature, that is to say, the Shapley-Shubik index, the Banzhaf index, the Johnston index, the Deegan-Packel index, and the Holler-Packel index. Three diferent approaches are used. First, the power indices are...

Over the last ten years the literature in experimental economics has seen a growing interest in groups and how they compare to individuals in different settings. This paper contributes to the literature on this topic by investigating the comparison between groups and individuals with respect to...

This paper studies the vulnerability of the pivotal mechanism with respect to manipulation by groups. In a lab experiment, groups decide on the implementation of various alternatives, some of which imply opposite interests for the two subgroups. We investigate the occurrence of tacit and...