Do people intervene to make others behave prosocially?

We experimentally investigate people's willingness to intervene in others' decision-making in order to promote a charitable donation. We find that only a minority of those subjects who would donate themselves enforce the donation by banning the selfish choice from the decision-maker's choice menu. Bans are more acceptable if they are implemented only after the decision-makers could choose between the selfish and the prosocial option themselves. Also, many subjects decide against offering decision-makers a monetary incentive to switch from the selfish to the prosocial choice. We discuss potential hypotheses about underlying motivations for the (non-)usage of interventions, with a special focus on the hypothesis that interventions to promote prosocial choice are more acceptable the more they respect the autonomy of others.