Hoheitliche Länderrisiken im hier beschriebenen Sinne sind bankbetriebliche Risiken, die im internationalen Kreditgeschaet durch die Zahlungsunfähigkeit oder -unwilligkeit der ausländischen Regierung entstehen. Länderrisiko-Analysen untersuchen folglich die Frage nach der Bonität eines...

The unmediated call auction is a useful trading mechanism to aggregate dispersed information. Its ability to incorporate information of a single informed insider, however, is less well understood. We analyse this question by presenting a simple call auction game where both auction prices and...

We investigate experimentally whether collective choice matters for individual attitudes to ambiguity. We consider a two-urn Ellsberg experiment: one urn offers a 45% chance of winning a fixed monetary prize, the other an ambiguous chance. Participants choose either individually or in groups of...

In many different contexts individuals take decisions on the behalf of others. However, little is known about how this circumstance affects the decision making process and influences the ultimate individuals' choices. In this paper, we focus on the context of investment decisions and study if...

Willingness to take risk depends on whether the risk affects others as well as oneself and on how the risk affects one's position vis-`a-vis others. Taking a bet can improve one's position relative to others or threaten it. We present an experiment that explores individual attitudes to lotteries...

In the last decades, there has been a large volume of research showing that emotions do have relevant effects on decision-making. We contribute to this literature by experimentally investigating the impact of four specific emotional states - joviality, sadness, fear, and anger - on risk...

Previous studies have shown that other-regarding concerns are weakened under risky situations. Daily experience also suggests that people care more about an identifiable than about an unidentifiable third person. We report on an experiment designed to explore whether rendering the other...

This paper studies the effect of social comparison on risk taking behavior. We assume that decision makers evaluate consequences of their choices not only as variations with respect to their economic status but also as variations with respect to the status of their peers. We test experimentally...

This paper estimates the determinants of decision time for different types of decision maker in the context of an experimental investigation of multiple prior models of behaviour under ambiguity. Four models are considered: Expected Utility, Smooth, Rank Dependent Expected Utility and Alpha...

Previous research indicates that risky and uncertain marginal returns from the public good significantly lower contributions. This paper presents experimental results illustrating that the effects of risk and uncertainty depend on the employed parameterization. Speci?cally, if the value of the...