Intertemporal Altruism
研究了利他行为中的跨期权衡，通过高赌注捐赠实验区分了基于选择日期和结果日期的利他效用，发现两种动机普遍存在且个体层面负相关。
Most prosocial decisions involve intertemporal trade-offs. Yet, the timing of prosocial utility flows is ambiguous and bypassed by most models of other-regarding preferences. We study the behavioral implications of the time structure of prosocial utility, leveraging a conceptual distinction between consequence-dated and choice-dated utility flows. We conduct a high-stakes donation experiment that comprehensively characterizes discounting behavior in self–other tradeoffs and allows us to identify different prosocial motives from their distinct time profiles. Our data can only be explained by a combination of choice- and consequence-dated prosocial utility. Both motives are pervasive and negatively correlated at the individual level.