Standard preference models in consumer research assume that people weigh and add all attributes of the available options to derive a decision, while there is growing evidence for the use of simplifying heuristics. Recently, a greedoid algorithm has been developed (Yee, Dahan, Hauser \& Orlin, 2007;...

Taxpayers often view tax rules and filing processes as complicated. In this paper I study whether the perceived tax uncertainty among peers leads to a reduction of voluntary tax compliance. I find strong supportive evidence for this hypothesis using a survey experiment for a large representative...

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...