Standard models of hierarchy assume that agents and middle managers are better informed than principals about how to implement a particular task. We estimate the value of the informational advantage held by supervisors (middle managers) when ministerial leadership (the principal) introduced a...

Agricultural extension programs often train a few farmers and count on diffusion through social networks for the innovation to spread. However, if markets are imperfectly integrated, this may also inflict negative externalities. In a two-step experiment of an agronomy training program among...

We estimate the causal effect of the diffusion of solar photovoltaic (PV) systems on the fraction of Green Party votes in federal and state elections in Baden-Württemberg, Germany. Our estimates are based on instruments that induce exogenous variation in roof appropriateness to PV installation....

Over the last twenty years the wage-education relationships in the US and Germany have evolved very differently, while the education composition of employment has evolved in a surprisingly parallel fashion. In this paper, we propose and test an explanation to these conflicting patterns. The...

Is the expansion of jobs in low-wage services in Europe restricted by high wages? With services now the main sector source of employment growth this question becomes crucial and we examine it through a detailed comparison of the role of low-wage services in the US and Germany. We find a clear...

Germany's more compressed wage structure is taken by many analysts as the main cause of the German-US difference in job creation. We find that the US has a more dispersed level of skills than Germany but even adjusted for skills, Germany has a more compressed wage distribution than the US. The...