We present clean evidence of a direct social context effect on behavior in a laboratory experiment: the gender composition of the room significantly alters the risk decisions of subjects even when the actions or presence of others are neither payoff nor information relevant. Our design is such...

We present clean evidence of a direct social context effect on behavior in a laboratory experiment: the gender composition of the room significantly alters the risk decisions of subjects even when the actions or presence of others are neither payoff nor information relevant. Our design is such...

We investigate the motives behind reciprocal behavior by making selfish acts anonymous and not common knowledge. In one treatment, subjects were assigned to the role of proposer or responder and played a trust game with random matching for 20 rounds. In a second treatment, the modified game, the...