Group size, collective action and complementarities in efforts

Collective Action and the Group Size Paradox

According to the Olson paradox, larger groups may be less successful than smaller groups in furthering their interests. We address the issue in a model with three distinctive features: explicit intergroup interaction, collective prizes with a varying mix of public and private characteristics, and nonlinear lobbying costs. The interplay of these features leads to new results. When the cost of lo...

Variability in group size and the evolution of collective action.

Models of the evolution of collective action typically assume that interactions occur in groups of identical size. In contrast, social interactions between animals occur in groups of widely dispersed size. This paper models collective action problems as two-strategy multiplayer games and studies the effect of variability in group size on the evolution of cooperative behavior under the replicato...

GROUP SIZE AND COLLECTIVE ACTION Third-Party Monitoring in Common-Pool Resources

This article examines the hypothesis that group size is inversely related to successful collective action. A distinctive aspect of the article is that it combines the analysis of primary data collected by the authors with a game-theoretic model. The model considers a group of people protecting a commonly owned resource from excessive exploitation. The authors view monitoring of individual actio...

Nonlinear effects of group size on collective action and resource outcomes.

For decades, scholars have been trying to determine whether small or large groups are more likely to cooperate for collective action and successfully manage common-pool resources. Using data gathered from the Wolong Nature Reserve since 1995, we examined the effects of group size (i.e., number of households monitoring a single forest parcel) on both collective action (forest monitoring) and res...

Supporting Information for Nonlinear effects of group size on collective action and resource outcomes