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Spillovers of Prosocial Motivation: Evidence from an Intervention Study on Blood Donors

Adrian Bruhin (), Lorenz Goette (), Simon Haenni and Lingqing Jiang

Cahiers de Recherches Economiques du Département d'économie from Université de Lausanne, Faculté des HEC, Département d’économie

Abstract: Spillovers of prosocial motivation are crucial for the formation of social capital. They facilitate interactions among individuals and create social multipliers that amplify the effects of policy interventions. We conducted a large-scale intervention study among dyads of blood donors to investigate whether social ties lead to motivational spillovers in the decision to donate. The intervention is a randomized phone call making donors aware of a current shortage of their blood type and serving us as an instrument for identifying motivational spillovers. About 40% of a donor's motivation spills over to the other donor, creating a significant social multiplier of 1.78.

Keywords: Social Interaction; Social Ties; Prosocial Motivation; Blood Donation; Bivariate Probit (search for similar items in EconPapers)
JEL-codes: C31 C36 D03 (search for similar items in EconPapers)
Pages: 43 pp.
Date: 2014-12
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Related works:
Journal Article: Spillovers of prosocial motivation: Evidence from an intervention study on blood donors (2020) Downloads
Working Paper: Spillovers of Prosocial Motivation: Evidence from an Intervention Study on Blood Donors (2015) Downloads
Working Paper: Spillovers of Prosocial Motivation: Evidence from an Intervention Study on Blood Donors (2014) Downloads
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