Cost-sharing is regarded as an important tool to reduce moral hazard in health insurance. Contrary to standard prediction, however, such requirements are found to decrease utilization both of efficient and of inefficient care. I employ a simple model that incorporates two possible explanations -...

We elicit concern for animal welfare in an incentivized, direct and real setup that allows us to separate genuine interest in animal welfare from confounding factors like advertisement, replacement arguments or image concerns. Subjects choose between intensive farming and organic living...

The voting method described in [Tangian 2017b] has been experimentally approbated during the 2016 election to the Karlsruhe Institute of Technology (KIT) Student Parliament [Tangian 2017c]. Under this election method, the voters cast no votes but are asked about their preferences on the policy...

The paper estimates the policy representation of 34 German parties that participate in the 2017 Bundestag (federal) election. For this purpose, the party positions on 31 topical issues are compared with the results of recent public opinion polls. Then we construct the party indices of popularity...

The paper estimates the policy representation of 34 German parties that have participated in the 2017 Bundestag (federal) election. For this purpose, the party positions on 31 topical issues are compared with the results of recent public opinion polls. Then we construct the party indices of...

This paper introduces mathematical models to capture the spreading of epidemics to explain the expansion of mortgage default events in the United States. Here we use the state of infectiousness and death to represent the subsequent steps of payment delinquency and default, respectively. Since...

Cooperativeness among genetically unrelated humans remains a major puzzle in the social sciences. We explore the causal impact of physical distance on willingness to help. In a field setting, participants decide about supporting local refugees at the dispense of money to themselves. We vary...

We study how the diffusion of being pivotal affects immoral outcomes. In a first set of experiments, subjects decide about agreeing to kill mice and receiving money versus objecting to kill mice and foregoing the monetary amount. In a baseline condition, subjects decide individually about the...

This paper explores the role of cheap excuses in product choice. If a product improves upon one ethically relevant dimension, agents may care less about other independent ethical facets of the product. Opting for a product that fulfills one ethical aspect may thus suffice for keeping a high...

During the 2016 election to the Student Parliament of the Karlsruhe Institute of Technology (KIT), an experiment on 'The Third Vote' was conducted. The goal was to test an alternative election method based on the idea of internet voting advice applications (VAAs). Under the election method...