The sunk cost fallacy is the tendency to continue an endeavour once an investment in money, effort, or time has been made. We studied how people's chronic orientation to cope with failing projects (i.e., action vs. state orientation) influences the occurrence of this sunk cost effect. We found...

In the current paper we investigate how feedback over decision outcomes may affect future decisions. In an experimental study we demonstrate that if people receive feedback over the outcomes they obtained (``factual outcomes'') and the outcomes they would have obtained had they decided...

In general, our justice system provides two types of reactions when justice is not served: punishing the perpetrator or compensating the victim. The present study focuses on outsiders observing a situation of injustice. We directly compare punishment and compensation behavior by introducing a...

The relation between social value orientation and the use of deception was studied in two experiments. Results showed that proself bargainers used deception mainly to increase their own outcomes. This was different for prosocial bargainers. Prosocial bargainers used deception often against...