What Determines Giving to Hurricane Katrina Victims? Experimental Evidence on Racial Group Loyalty
通过实验操纵受害者种族、收入和值得帮助程度，发现平均而言受害者种族不影响捐款，但对自己种族群体有强烈认同感的人会更多捐给同种族受害者。
We investigate the role of racial group loyalty on generosity in a broadly representative sample of the US adult population. We use an audiovisual presentation to manipulate beliefs about the race, income, and worthiness of Hurricane Katrina victims. Respondents then decide how to divide $100 between themselves and Katrina victims. We find no effects of victims' race on giving on average. However, respondents who report feeling close to their racial or ethnic group give substantially more when victims are of the same race, while respondents who do not feel close to their group give substantially less.