Do people only reject interference and keep control in order to affect the outcome? We find that 20% of subjects reject unrequired help and insist on their solution to a problem - although doing so is costly and does not change the result. We tease out the motives by varying the information...

We conducted large-scale lost letter experiments in Beijing, a megacity with more than 21 million residents, to test if the observed altruistic attribute of the letter recipient would induce more passersby to return the lost letters. The treatment letters were addressed to a nationally renowned...

Willingness to take risk depends on whether the risk affects others as well as oneself and on how the risk affects oneś position vis-á-vis others. Taking a bet can improve oneś position relative to others or threaten it. We present an experiment that explores individual attitudes to lotteries...