We experimentally investigate a finitely repeated public good game with varying partners. Within each period, participants are pairwise matched and contribute simultaneously. Participants are informed about contributions and each participant evaluates her partner's contribution. At the beginning...

In real world bargaining the distribution of seats or voting weights often does not accurately reflect real power. Game-theory predictions are insensitive to nominal differences. We refer to the converse idea that nominal differences matter as power illusion. We experimentally study the...

We study loyalty in groups that are exogenously assigned based on members' performances in a task. We observe that in-group bias is strong and significant among subjects who score high in performance, and that it is weak and insignificant among those who score low. This asymmetric pattern is...

In many bargaining situations, the distribution of seats or voting weights does not accurately reflect bargaining power. Maaser, Paetzel and Traub (Games and Economic Behavior, 2019) conducted an experiment to investigate the effect of such nominal power differences in the classic Baron-Ferejohn...

Online interactions are frequently governed by reputation systems that allow users to evaluate each other after an interaction. Effective reputation systems can increase trust and may improve efficiency in market settings. In recent years, however, fake reviews have become increasingly...

We present a theoretical model of a linear public good game in which heterogeneous players express social approval after observing contributions. The model explains how social approval is expressed and predicts positive contributions if subjects have a preference for social approval. Using a...

The 9-Euro Ticket increased public transport use but hardly shifted away from car travel. Train use surged for leisure activities; car use dropped least among commuters. The 9-Euro Ticket led to overcrowding, delaying both regional and non-covered long-distance trains. A rough calculation...

We examine the use and usefulness of systematic compliance management in research institutes using a survey of leaders of German research institutes and expert interviews. While only a quarter of the surveyed leaders report that they have an explicit compliance management system, they report to...

We study the causal effects of household tax credits on the willingness to demand legally provided services using two survey experiments with 1.974 German homeowners. Participants choose between hypothetical offers of service providers and are randomly assigned to a policy scenario 1) without a...

We use a ten-round online mind game to determine whether the effect of honesty nudges depends on timing and content. Reminding individuals about the right thing to do increases honesty. Including information that it is possible to assess an individual's dishonesty strengthens the effect of the...