Ottoni-Wilhelm, MarkVesterlund, LiseXie, Huan2018-05-032018-05-032017-11Ottoni-Wilhelm, M., Vesterlund, L., & Xie, H. (2017). Why Do People Give? Testing Pure and Impure Altruism. American Economic Review, 107(11), 3617–3633. https://doi.org/10.1257/aer.20141222https://hdl.handle.net/1805/16035Researchers measure crowd-out around one level of charity output to identify whether giving is motivated by altruism and/or warm-glow. However, crowd-out depends on output, implying first that the power to reject pure altruism varies, and second that a single measurement of incomplete crowd-out can be rationalized by many different preferences. By instead measuring crowd-out at different output levels, we allow both for identification and for a novel and direct test of impure altruism. Using a new experimental design, we present the first empirical evidence that, consistent with impure altruism, crowd-out decreases with output.enPublisher Policycharity outputaltruismcrowd-outArticle