Studies have shown that there are differences in cooperative behavior across countries. Furthermore, differences in the use and the reaction on the introduction of a norm enforcement mechansism have been documented in cross-cultural studies, recently. We present data which prove that stark...

We explore the effect of income inequality and peer punishment on voluntary provision of public goods in an experimental context. Our sample draws from nine fishing communities in South-Africa where high levels of inequality prevail. We find that aggregate cooperation is higher in both the...

We use behavioral and experimental economics to study a particular aspect of the economics of climate change: the potential tradeoff between countries’ investments in mitigation versus adaptation. While mitigation of greenhouse gases can be viewed as a public good, adaptation to climate change...

Resource-poor rural South Africa is characterised by high human densities due to the historic settlement patterns imposed by apartheid, high levels of poverty, under-developed markets and substantially high food insecurity. This chronic food insecurity combined with climate and weather...

This study measures the link between expected health and contextual health uncertainty on sexual behaviours associated with the risk of HIV infection. We extend similar studies on the subject by focusing on contextual factors as a way of explaining individual sexual behaviour in low and high HIV...

Even though antiretroviral treatment is becoming more efficient and available, new HIV infections still occur. This is particularly the case in sub-Saharan Africa. Sexual transmission of HIV is still the main mode of transmission in sub-Saharan Africa, and multiple sex partners have been shown...

We explore the effects of announcements of future punishment opportunities in public goods games. Announcements can influence subject behaviour, through changing expectations, before the institution is implemented (adjustment effect) or after implementation (adaptation effect). Our results...

The effects of stake size on cooperation and punishment are investigated using a public goods experiment. We find that an increase in stake size does neither significantly affect cooperation nor, interestingly, the level of punishment.

International commitments to reduce emissions must be negotiated between countries in a manner considered to be fair or equitable. While the burden-sharing principles commonly advocated in climate negotiations reflect different views of what constitutes a fair way to distribute the abatement...

Climate change mitigation presents us with a social dilemma: while mitigation benefits everyone, individuals lack the incentive to alter their behaviour, since they can reap its benefits while failing to reduce their own emissions. Using a 'public good' experiment with a climate change framing,...