The Effect of Effectiveness: Donor Response to Aid Effectiveness in a Direct Mail Fundraising Experiment
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We test how donors respond to new information about a charity's effectiveness. Freedom from Hunger implemented a test of its direct marketing solicitations, varying letters by whether they include a discussion of their program's impact as measured by scientific research. The base script, used for
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美国国家经济研究局创建时间：
2014-04-01
