We examined whether the knowledge that your private donation has a large number of potential recipients causes you to give more or less. We found that the people with blood type O are more likely to have donated blood than those with other blood types, by using a Japan's nationally...

While philanthropy is seen as a critical instrument for wealth redistribution in countries with low state capacity or weak welfare institutions, there is little empirical evidence of its distributional consequences. How does philanthropic public good provision affect inequalities in access to...