Lift and Shift: The Effect of Fundraising Interventions in Charity Space and Time
American Economic Journal: Economic Policy · 2022 · Kimberley Scharf、Sarah Stefana Smith、Mark Ottoni–Wilhelm
中文摘要
筹款干预可能提升捐赠额，和/或转移其构成与时间分布。使用在慈善空间和时间维度上均十分丰富的数据，我们发现大型筹款活动提升了针对该活动慈善机构的捐赠额，且这一增加并未被后来时段中较低的捐赠额所抵消。引人注目的是，大型活动还将对其他（非活动）慈善机构的捐赠前移，而这被后来较低的捐赠额所抵消。为了理解这些反应模式，我们引入了一个两期、两慈善机构的“提升-转移”模型。模型表明，只有当温情效应在跨期和跨慈善机构之间均可替代时，观察到的反应模式才有可能出现。（JEL D64, H12, H41, L31, Q54）
Abstract
Fundraising interventions may lift donations and/or shift their composition and timing. Using data rich in both the charity space and time dimensions, we find that major fundraising appeals lift donations to the appeal charity and that this increase is not offset by lower donations later in time. Strikingly, major appeals also forward-shift donations to other (nonappeal) charities that are offset by lower donations later. To understand these response patterns, we introduce a two-period, two-charity “ lift-shift” model. The model indicates that the observed response patterns are possible only if warm glow is substitutable, both intertemporally and between charities. (JEL D64, H12, H41, L31, Q54)