The main objective of this paper is to provide empirical evidence on the mechanisms that shape the relationship between violent conflict and collective action. Conflict dynamics in Colombia allow us to exploit rich variation in armed group presence and individual participation in local...

This paper analyzes the potential for regional collective action in Latin America in the areas of finance, trade and infrastructure. Seven priority areas emerge. First, regional cooperation within increasingly important global financial and trade institutions (the G20, the Financial Stability...

We consider a best-of-three Tullock contest between two ex-ante identical players. An effort-maximizing designer commits to a vector of player-specific biases (advantages or disadvantages). In our benchmark model the designer chooses victory-dependent biases (i.e., the biases depend on the...

In many real-world contests (political elections / lobbying for public projects), contestants try to engage supporters (unemployed youth / local residents) to fight for them. Such contests have the following features: a significant part of a contestant's supporter compensation is contingent upon...

In the world of satin bowerbirds, the male-birds engage in a contest among themselves to win their mates: they spend considerable time and effort in decorating their own bowers, and then attempt to destroy the decorations of their rivals' bowers. The female-birds, in turn, select their mates on...

In this paper, we study how between-group wealth and size heterogeneity affect success probabilities as well as aggregate rent-seeking efforts when two groups compete for the allocation of a pure public good. Unlike with previous models, we measure the utility cost of rent-seeking in terms of...

We experimentally study endogenous alliance formation and contest effort choices in a generic three-player contest. Differences in intrinsic or extrinsic incentives to expend effort cause self-selection. Weakly motivated players have an incentive to enter into an alliance and to free-ride on...

I analyse a group contest in which groups decide over two dimensions of membership-exclusivity: whether a member is allowed to join the group at all, and whether this member is allowed to join another group as well. If the prize is mostly private, group leaders do not offer membership in...

We study collective action under adverse incentives: each member of the group has a given budget ('use-it-or-lose-it') that is his private information and that can be used for contributions to make the group win a prize and for internal fights about this very prize. Even in the face of such...

Spanish Abstract: El presente capítulo describe y analiza un proceso participativo llevado a cabo con el propósito de apoyar la construcción de acuerdos colectivos y un sistema de monitoreo ciudadano para el manejo sostenible de las cuencas de los ríos Suratá, en Santander, y Zulia y...