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...

The 1994 International Conference of Population and Development (ICPD) established goals for the expansion of population assistance. This global effort has so far not sufficiently been supported by donor funds. Dynamic panel estimation methods are used to see what lies behind the sharing of...

There are two basic reasons why a citizen may choose to engage in political activity: She may wish to achieve particular results (“extrinsic motivations”) or she may simply enjoy engaging in the political activity itself (“intrinsic motivations”). However, most citizens’ ability to...

We study how norms can solve distributional conflict inside a clan and the efficient coordination of collective action in a conflict with an external enemy. We characterize a fully non-cooperative equilibrium in a finite game in which a self-enforcing norm coordinates the members on efficient...

Countries can challenge potential trade violations using the WTO's dispute settlement system, yet many policies that appear to violate WTO rules remain unchallenged, even when they have a significant economic impact. Why is this? We argue that the likelihood that a country challenges a...

Contests between groups are plagued by intra-group externalities (freeriding). Yet, costless incentive schemes that entirely avoid free-riding within a group might not be desirable, neither individually nor socially. In contests among two groups, a relatively weak (i.e., small or unproductive)...

Our experimental analysis of alliances in conflicts leads to three main findings. First, even in the absence of repeated interaction, direct contact or communication, free-riding among alliance members is far less pronounced than what would be expected from non-cooperative theory. Second, this...