Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This paper reports results of a natural field experiment on the dictator game where subjects are unaware that they are participating in an experiment. Three other experiments explore, step by step, how laboratory behavior of students relates to field behavior of a general population. In all experiments, subjects display an equally high amount of pro-social behavior, whether they are students or not, participate in a laboratory or not, or are aware of their participating in an experiment or not. This paper shows that there are settings where laboratory behavior of students is predictive for field behavior of a general population. Copyright Economic Science Association 2014