Interrelated global crises - climate change, pandemics, loss of ecosystem services and biodiversity - pose risks that demand collective solutions. Uncertainty about others' behavior, coupled with the dependence on some to take collective efforts to mitigate risks for all (e.g. conservation of...

We study cooperation in an environment where public good providers face the decision to accept a newcomer to their group. A bottom-up process for accepting new members to social groups reveals individual preferences to include newcomers. Alternatively, inclusion can be decided in a top-down...

We devise a new experimental game by nesting a voluntary contributions mechanism in a broader spectrum of incentive schemes. With it, we study tensions between egalitarianism, equity concerns, self-interest, and the need for incentives. In a 2x2 design, subjects either vote on or exogenously...

This study presents experimental evidence on the effectiveness of alternative institutional arrangements designed to allow providers of public good services to be subsidized by non-providers. The decision setting is a repeated linear public good game with two groups, insiders and outsiders....

We present experimental evidence for decision settings where public good providers compete for endogenous donations offered by outside donors. Donors receive benefits from public good provision but cannot provide the good themselves. The performance of three competition mechanisms is examined in...

We study experimentally the protection of property in five widely distinct countries-Austria, Mexico, Mongolia, South Korea and the United States. Our main results are that the security of property varies with experimental institutions, and that our subject pools exhibit significantly different...

Using an experimental approach, this paper examines how scarcity of natural resources affects people's readiness to cooperate and to engage in antisocial behaviour. The experiments were carried out with pastoralists from southern Namibia whose livelihoods are highly dependent on grazing...