In this paper we adopt Granovetter's view expressed in his famous article ''Economic Action and Social Structure: The Problem of Embeddedness'' , where he argues that the concept of man in economics is extremely undersocialized because it ignores the importance of social networks. In so doing...

The importance of social trust on economic growth has been suggested by many empirical works. This paper formalizes the concept of social trust and studies its formation process in a game theoretic setting. It provides plausible explanations for a wide range of empirical and experimental...

We model how excess demand or excess supply can be generated in the presence of a social network of interactions, where agents are subject to external information and individual incentives. In this context we study price fluctuations in financial markets under equilibrium. In particular, we...

In this paper, the link between community enforcement and co-operation in environments where trust is required is investigated. For this purpose, an assymetric trust game in which peer-to-peer sanctioning mechanisms are available is considered. Firstly, the outcome of this game is characterised...

Why are there such large differences in living arrangements across Western European countries? Conventional economic analyses have not been successful in explaining differences in living arrangements and particularly the dramatic increase in the fraction of young adults living with their parents...

This paper formulates a model of dynamic, endogenous reform of political institutions. Specifically, a class of dynamic political games (DPGs) is introduced in which institutional choice is both recursive and instrumental. It is recursive because future political institutions are decided under...

We model electoral competition between two parties in a winner take all election. Parties choose strategically first their platforms and then their campain spending under aggregate uncertainty about voters' preferences. In the unique Nash equilibrium larger elections are characterized by a...

Spatial models of voting behaviour are the dominant paradigm in political science. Consistent with this approach, it will be the case that, ceteris paribus, voters should vote for the party nearest to them on the political spectrum. A key question is how we measure nearness or distance. We...

We examine the incentives of an interest group to provide a political decision-maker with policy-relevant information and to exert pressure on her. Both activities are costly but may induce the lobby's preferred policy. Our paper provides an integrated analysis of both lobbying activities and...

The phenomenon of "choice shifts" in group decision-making is fairly ubiquitous in the social psychology literature. Faced with a choice between a ``safe" and ``risky" decision, group members appear to move to one extreme or the other, relative to the choices each member might have made on her...