Der Sunk-Cost-Effekt beschreibt die irrationale Tendenz, Entscheidungen über die Fortsetzung eines Unterfangens oder die Nutzung einer Sache davon abhängig zu machen, ob und in welchem Umfang hierfür bereits versunkene Kosten entstanden sind. Dieses kann in der Praxis kostspielige...

The present thesis investigates social learning processes in quantitative estimation tasks with a focus on two different social contexts. The first part concentrates on interacting groups and examines G-I transfer, which denotes an increase in individual performance due to group interaction, for...

Past research has predominantly focused on negative effects of media exposure. However, as pointed out by the General Learning Model (GLM), exposure to media may have positive consequences as well. Two studies tested the effects of exposure to media with prosocial (relative to neutral) content...

Risk-taking behavior is puzzling insofar as it may involve considerable losses (such as increased mortality rates). The present research advances an evolutionary account of risk-taking behavior in that one of its main functions is to get access to potential mating partners. Inasmuch as...

The present research examined whether price trend misperceptions can be explained by the differential perception of increasing versus decreasing prices. We expected price increases (losses to consumers) to be perceived as being more intense than price decreases (gains to consumers) of the same...