This paper generalizes previous existence results on unidimensional electoral competition, by extending the traditional two-party electoral game to the case where parties have mixed motivations, in the sense that they are interested in winning the election, but also in the policy implemented...

In a model where cooperation is beneficial, but subject to cheating, and is supported by trigger strategy punishments in a repeated game, we explore the relationship between the nature of cooperation (size and composition of coalitions) and underlying inequality in the distribution of private...

If each member of a group assigns a certain probability to a hypothesis, what probability should the collective as a whole assign? More generally, how should individual probability functions be merged into a single collective one? I investigate this question in case that the individual...

Variations of bilateral aid flows are difficult to explain on the basis of official development objectives or recipient need. At the example of US aid to Pakistan, this paper suggests alternative political economic explanations, notably the relevance of ethnic lobbying and the relevance of US...

We characterize a rule in cost spanning tree problems using an additivity property and some basic properties. If the set of possible agents has at least three agents, these basic properties are symmetry and separability. If the set of possible agents has two agents, we must add positivity. In...

The decisions made during the design process have a critical impact both on the design solution obtained but also on the design process itself. It can be observed that while the way in which products are developed differs not only across firms but within the same firm over time, what is being...

In this paper we consider the way in which authorities arise in response to the need for coordination. In a model of local interaction, an authority is understood as a self-enforcing coordination selection structure, where the threat of violence ensures compliance. Such authorities form if...

A simple Ising spin model which can describe the mechanism of advertising in a duopoly market is proposed. In contrast to other agent- based models, the influence does not flow inward from the surrounding neighbors to the center site, but spreads outward from the center to the neighbors. The...

May's theorem famously shows that, in social decisions between two options, simple majority rule uniquely satisfies four appealing conditions. Although this result is often cited as a general argument for majority rule, it has never been extended beyond pairwise decisions. Here we generalize...