In this experiment, we endogenize the choice of which contribution scheme is implemented in a public good game. We investigate three rule-based contribution schemes and a voluntary contribution mechanism (VCM). The game is implemented either as a Single- or a Multi-Phase Game. In the...

In this experiment, we endogenize the choice of which contribution scheme is implemented in a public goods game. We investigate three rule-based contribution schemes. In a first step, players agree on a common group provision level using the principle of the smallest common denominator....

Many public goods can be provided at different spatial levels. Evidence from social identity theory and in-group favoritism raises the possibility that where higher-level provision is more efficient, subjects' narrow concern for local outcomes (parochialism) could harm efficiency. Building on...

We study spatially differentiated competition between charities by partnering with two foodbanks in two neighboring cities to conduct a field experiment with roughly 350 donation appeals. We induce spatial differentiation by varying the observability of charities' location such that each donor...

Many public goods can be provided at different spatial levels. Evidence from social identity theory and in-group favoritism raises the possibility that where higher-level provision is more efficient, subjects’ narrow concern for local outcomes (parochialism) could harm efficiency. Building on...

From a current perspective the Paris Agreement is not sufficient to limit the global mean temperature below 2êC above pre-industrial level as intended. The Agreement stipulates that parties review, compare and ratchet up efforts to combat climate change over time. Within this process,...

From a current perspective the Paris Agreement is not sufficient to limit the global mean temperature below 2êC above pre-industrial level as intended. The Agreement stipulates that parties review, compare and ratchet up efforts to combat climate change over time. Within this process,...

Bei der 26. UN-Klimakonferenz in Glasgow geht es um die Umsetzung der Ziele aus dem Pariser Klimaschutzabkommen. Im Mittelpunkt steht dabei die schrittweise Zielerhöhung der einzelnen Länder, die sich anschließend in konkreten Klimaschutzbeiträgen widerspiegeln sollen. Der vorliegende ZEW...

We experimentally test a theoretically promising amendment to the ratchet-up mechanism of the Paris Agreement. The ratchet-up mechanism prescribes that parties' commitments to the global response to climate change cannot decrease over time and our results confirm that its effect is detrimental....

In this experiment, we endogenize the choice of which contribution scheme is implemented in a public good game. We investigate three rule-based contribution schemes and a voluntary contribution mechanism (VCM). The game is implemented either as a Single- or a Multi-Phase Game. In the...