A model of group decision-making is studied, in which one of two alternatives must be chosen. While group members differ in their valuations of the alternatives, everybody prefers some alternative to disagreement. Our model is distinguished by three features: private information regarding...

The paper studies, in a repeated interaction setting, how the presence of cooperative agents in a heterogeneous community organized in groups affects efficiency and group stability. The paper expands on existing literature by assuming that each type can profitably mimic other types. It is shown...

This article determines the conditions under which the Southern countries should act together, or separately, while negotiating with the North about climate change policy and about the conditions for future Southern engagement. The paper models the international negotiations with complete and...

By means of a two-jurisdictional model, this paper analyses the optimal division of environmental policymaking functions among the different government levels, identifying the most appropriate level of decentralization in each case. The paper focuses on water resources policies, with an...

Federal action addressing climate change is likely to emerge either through new legislation or via the U.S. EPA’s authority under the Clean Air Act. The prospect of federal action raises important questions regarding the interconnections between federal efforts and state-level climate policy...

We consider one-to-one matching problems under two modalities of uncertainty that differ in the way types are assigned to agents. Individuals have preferences over the possible types of the agents from the opposite market side and initially know the “name” but not the ”type” of the other...

This paper studies many-to-one matching market in which each agent’s preferences not only depend on the institution that hires her, but also on the group of her colleagues, which are matched to the same institution. With an unrestricted domain of preferences the non-emptiness of the core is...

This paper analyses the contribution to the creation of a culturally diverse Sydney landscape by ethnic communities following the arrival of over a million and half non-English speaking settlers since 1948. Through fragmented collective actions, around 450 communal places were established to...