Many countries are implementing or at least considering policies to counter increasingly certain negative impacts from climate change. An increasing amount of research has been devoted to the analysis of the costs of climate change and its mitigation, as well as to the design of policies, such...

This paper studies the incentives for international cooperation if (some) countries prefer a more equitable distribution of per capita emission levels. The impact of such an equity preference is analyzed first for a bilateral, and then for a multilateral environmental problem. We show that -...

In well-functioning democracies, the policymaking process should in principle respond to persistent economic inequality with corrective policies. This process is set in motion through majority demands for redistributive taxation and spending that elected representatives eventually supply through...

We conducted a framed field experiment to explore a situation where individuals have potentially competing social identities to understand how group identification and socialization affect ingroup favoritism and out-group discrimination. The Dictator Game and the Trust Game were conducted in...

The canonical bargaining game in economics is the ultimatum game, played by tens of thousands of students around the world over the past three decades. In the ultimatum game, first studied by Werner Guth, Rolf Schmittberger, and Bernd Schwarze (1982), the “proposer” proposes how to split a...

We investigate the computational complexity of several decision problems in hedonic coalition formation games and demonstrate that attaining stability in such games remains NP-hard even when they are additive. Precisely, we prove that when either core stability or strict core stability is under...

We study a model in which heterogeneous agents first form a trading network where link formation is costless. Then, a seller and a buyer are randomly selected among the agents to bargain through a chain of intermediaries. We determine both the trading path and the allocation of the surplus among...

We analyse interethnic cooperation in an infinitely repeated prisoner’s dilemma when members of one group are unable to target punishment towards individual defectors from the other group. We first show that indiscriminate outgroup punishment may sustain cooperation in this setting. Our main...