In this paper we study the vulnerability of parliamentary voting procedures to strategic candidacy. Candidates involved in an election are susceptible to influence the outcome by opting out or opting in. In the context of three-alternative elections and under the impartial anonymous culture...

The Increasing Committee Size Paradox is a voting inconsistency that occurs under voting systems where voters cast exactly k votes when there are k seats to fill. This paradox occurs when, given an elected committee of size k, one of its member could not be elected if we were to elect a...

This review article introduces and evaluates various ways to aggregate probabilistic opinions of different individuals. For each of these three ways, an axiomatic characterization result is presented (a new one in the case of multiplicative pooling). The three ways satisfy different axioms and...

What is the relationship between degrees of belief and (all-or-nothing) beliefs? Can the latter be expressed as a function of the former, without running into paradoxes? We reassess this “belief-binarization” problem from the perspective of judgmentaggregation theory. Although some...

We review the theory of information cascades and social learning. Our goal is to describe in a relatively integrated and accessible way the more important themes, insights and applications of the literature as it has developed over the last thirty years. We also highlight open questions and...

One problem is standing out above all others in social science: how should humanity govern itself? The problem is so important that all wars of humanity in the past, present, and future, are directly related to this problem. Despite the fact that this problem has attracted interests of some...

This article presents the basics of argumentation theory. The relations of the argument with the concept of logical inference and an illustration of argument in international comparative policy analysis: the analysis of arguments in the invasion of Iraq

The aim of this paper is to interpret the relationships between information networks and the civil wars (Colombia). Over a period of paramilitary violence networks of informants were used with a strategic purpose. In fact, the paramilitaries were preparing each slaughter counting information...

Media, opinion leaders, co-ethnics, family members, and friends influence our political decisions. The ways in which these influences affect political cycles and (in)stability has been understudied. We propose a model of a networked political economy, where agents' choices are partly determined...