We introduce the give-or-destroy game that allows us to fully elicit an individual's social preference schedule. We find that about one third of the population exhibits both pro-social and anti-social preferences that are independent of payoff comparisons with those who are affected. We call...

We present a field experiment to assess the effect of own and peer wage variations on actual work effort of employees with hourly wages. Work effort neither reacts to an increase of the own wage, nor to a positive or negative peer comparison. This result seems at odds with numerous laboratory...

updated version of paper no 55

We present a field experiment to assess the effect of own and peer wage variations on actual work effort of employees with hourly wages. Work effort neither reacts to an increase of the own wage, nor to a positive or negative peer comparison. This result seems at odds with numerous laboratory...

We report an experiment on two treatments of an ultimatum minigame. In one treatment, responders’ reactions are hidden to proposers. We observe high rejection rates reflecting responders’ intrinsic resistance to unfairness. In the second treatment, proposers are informed, allowing...

We introduce the moonlighting game. Player A can take money from or pass money to player B, who can either return money or punish player A. One-shot experiments were performed on this game. Treatments were conducted with and without making non-binding agreements beforehand. The results refute...

We report on a two-person bargaining experiment, where both players were represented by groups of three persons each. The discussions within the groups were recorded on video tapes and have been transcribed into text protocols. Analyzing the final payoffs and proposals we got several results...

Essential characteristics of corruption are (1) a reciprocity relationship between briber and public official, (2) negative welfare effects, and (3) high penalties when discovered. We separate the influences of these factors in an experiment. In a two-player game reciprocation is economically...