%0 Report %A Chopra, Felix %A Eisenhauer, Philipp %A Falk, Armin %A Graeber, Thomas W %T Intertemporal Altruism %D 2021 %8 2021 Jan %I Institute of Labor Economics (IZA) %C Bonn %7 IZA Discussion Paper %N 14059 %U https://www.iza.org/publications/dp14059 %X Standard consumption utility is linked in time to a consumption event, whereas the timing of prosocial utility flows is ambiguous. Prosocial utility may depend on the actual utility consequences for others -- it is consequence-dated -- or it may be related to the act of giving and is thus choice-dated. Even though most prosocial decisions involve intertemporal trade-offs, existing models of other-regarding preferences abstract from the time signature of utility flows, limiting their explanatory scope. Building on a canonical intertemporal choice framework, we characterize the behavioral implications of the time structure of prosocial utility. We conduct a high-stakes donation experiment that allows us to identify non-parametrically and calibrate structurally the different motives from their unique time profiles. We find that the universe of our choice 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. %K altruism %K intertemporal decision-making %K donation %K time inconsistency