We consider the consequences of a scientific literature with only one model of an important phenomenon. The falsification of the model would mean falsification of the science. Scientists who would prefer not to have their discipline falsified will be tempted to find ad hoc explanations to excuse...

Does transparent leadership promote cooperative groups? We address this issue using a public goods experiment with exogenously selected leaders who are able to send non-binding contribution suggestions to the group. To investigate the effect of transparency in this setting we vary the ease with...

Decisions about public goods in the real world are frequently made by trustees—individuals responsible for managing pools of contributed funds—rather than by the contributors themselves. We conduct a laboratory experiment to compare contributions made by trustees who play with other trustees...