Standard vs random dictator games. The effect of role uncertainty on generosity

Using a multiple-price list dictator game, this paper provides experimental evidence that the level of generosity is affected when we vary the probability that the dictator’s decision will be implemented. We also show that framing matters for generosity in that subjects are less generous when their choices under role uncertainty are such that subjects perceive that they are in the role of dictators and know that their choices will be implemented with a certain probability, compared with a setting in which subjects are told that they are in the role of recipients and know that their choices will not be implemented with certain probability.