One way to approach this aspect of charitable giving is to look at it just like the purchase of any other commodity. That is, we expect contributions to depend on how much we earn and how costly it is to give (Goeree, 2002). Determining how individuals respond to these factors is crucial for predicting not only how total donations respond to changes in tax policy and how fundraisers can take advantage of these changes, but also for determining how the government best can design subsidies such as the tax deductibility of donations to nonprofits and lastly how marketers and fundraisers can better leverage new and social media in reaching donors.
While the similarity with ordinary commodities was clear when I examined responses to changes in income and prices, it is less so when I wanted to determine what motivates individuals to make such a purchase or contribution. What is it that individuals get in return from these transactions? What tradeoffs
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