By extending a typical endowment effect experiment with the possibility to win the endow-ment in a real effort contest, we found two enforcing effects that led to a complete market failure. Subjects who won the item in the competition had an extremely high willingness to accept (trophy effect)....

We introduce a competitive framing in the mini-ultimatum game utilizing chess puzzles. Therein, our chess playing participants accept low offers significantly more often compared to a neutral framing. We conclude that in familiar competitive surroundings egoistic behavior is more acceptable.

Using a real effort experiment, we analyze the dependence of tax evasion on the amount of effort invested to generate income. In three treatments, subjects were either endowed with income or had to work moderately or arduously to earn it. In line with prospect theory, subjects evaded more taxes...

The main goal of our study is to analyze how success and failure in crucial situations affect subsequent individual performance. Our study is based on evidence from a natural experiment of NBA (National Basketball Association) players: Based on play-by-play statistics of NBA games in 10 seasons...

This doctoral thesis investigates the influence of overconfidence on the outcomes in experimental asset markets, both on the market and individual levels. Thesis consists of three parts. In the first part an instrument (test) is developed that is later used in economic experiments to measure...