Banning deception in economic experiments does not exclude experiments with participants in the role of experimenters … who can gain by deceiving those in the role of participants. We compare treatments with and without possible deception by … experimenter-participants to test whether deception aects behaviour of participant-participants in a dictator experiment and …

Banning deception in economic experiments does not exclude experiments with participants in the role of experimenters … who can gain by deceiving those in the role of participants. We compare treatments with and without possible deception by … experimenter-participants to test whether deception aects behaviour of participant-participants in a dictator experiment and …

We analyse two types of belief-dependant models of social preferences: guilt aversion and reciprocity. In particular …, we test the relevance of their input variables (second-order beliefs and general dispositions for guilt/reciprocity). The … data confirm the predictions of belief-dependant models. Both second-order beliefs and a participant's sensitivity to guilt/reciprocity …

People exhibit group reciprocity when they retaliate, not against the person who harmed them, but against somebody else … in that person's group. Group reciprocity may be a key motivation behind intergroup conflict. We investigated group … reciprocity in a laboratory experiment. After a group identity manipulation, subjects played a Prisoner's Dilemma with others from …

more than necessary. We control for individual response- as well as sample selection-bias and find that reciprocity appears …

) is added in order to introduce reciprocity. We find significantly higher rates of selfish choices in our treatments that …