Efficiency-Enhancing Signaling in the Samaritan's Dilemma

Working Paper: CEPR ID: DP3842

Authors: Johan Lagerlf

Abstract: Suppose an altruistic person - A - is willing to transfer resources to a second person - B - if B comes upon hard times. If B anticipates that A will act in this manner, B will save too little from both agents? point of view. This is the Samaritan?s dilemma. The logic of the dilemma has been employed in an extensive literature, addressing a wide range of both normative and positive issues. This Paper shows, however, that the under-saving result is mitigated if we relax the standard assumption of complete information. The reason for this is that if A is uncertain about how big B?s need for support is, B will have an incentive to signal that they are in great need by saving more that they otherwise would have done.

Keywords: Altruism; Efficiency; Saving; Signaling

JEL Codes: D64; D82


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
private information about future needs (D14)savings level of b (D14)
savings level of b (D14)transfer amount by a (F16)
savings level of b (D14)belief of a about b's need (D83)
belief of a about b's need (D83)transfer amount by a (F16)
savings level of b (D14)signaling of b's need (D83)
signaling of b's need (D83)transfer amount by a (F16)

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