This volume was prepared by Simon Wiederhold during his stay at the Friedrich Schiller University of Jena and at the Duke University in Durham, U.S. It was accepted as a doctoral thesis by the School of Economics and Business Administration at the University of Jena in August 2011. The thesis...

This paper investigates the interaction of intrinsic and extrinsic incentives. We propose a simple principal-agent model with control that incorporates the existence of social groups resulting from common experiences in the past. Our laboratory experiment shows that agents with previous common...

Controlling employees can have severe consequences in situations that are not fully contractible. However, the perception of control may be contingent on the nature of the relationship between principal and agent. We, therefore, propose a principal-agent model of control that takes into account...

We provide the first causal evidence of discrimination against migrants seeking child care. We send emails from fictitious parents to 18, 000 early child care centers across Germany, asking if there is a slot available and how to apply. Randomly varying names to signal migration background, we...

We provide the first causal evidence of discrimination against migrants seeking child care. We send emails from fictitious parents to 18, 000 early child care centers across Germany, asking if there is a slot available and how to apply. Randomly varying names to signal migration background, we...

We provide the first causal evidence of discrimination against migrants seeking child care. We send emails from fictitious parents to 18, 000 early child care centers across Germany, asking if there is a slot available and how to apply. Randomly varying names to signal migration background, we...

We provide the first causal evidence of discrimination against migrants seeking child care. We send emails from fictitious parents to 18,000 early child care centers across Germany, asking if there is a slot available and how to apply. Randomly varying names to signal migration background, we...