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Altruism in Networks

  • Renaud Bourlès

    ()

    (Ecole Centrale Marseille (Aix-Marseille School of Economics), CNRS & EHESS)

  • Yann Bramoullé

    ()

    (Aix-Marseille University (Aix-Marseille School of Economics), CNRS & EHESS)

We provide the first theoretical analysis of altruism in networks. Agents are embedded in a fixed, weighted network and care about their direct friends. Given some initial distribution of incomes, they may decide to support their poorer friends. We study the resulting non-cooperative transfer game. Our analysis highlights the importance of indirect gifts, where an agent gives to a friend because his friend himself has a friend in need. We uncover four main features of this interdependence. First, we show that there is a unique profile of incomes after transfers, for any network and any utility functions. Uniqueness in transfers holds on trees, but not on arbitrary networks. Second, there is no waste in transfers in equilibrium. In particular, transfers flow through indirect paths of highest altruistic strength. Third, a negative shock on one agent cannot benefit others and tends to affect socially closer agents first. In addition, an income redistribution that decreases inequality ex-ante can increase inequality ex-post. Fourth, altruistic networks decrease income inequality. In contrast, more altruistic or more homophilous networks can increase inequality.

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File URL: http://www.amse-aixmarseille.fr/sites/default/files/_dt/2012/wp_2013_-_nr_56.pdf#overlay-context=fr/recherche/documents-de-travail/altruism-networks
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Paper provided by Aix-Marseille School of Economics, Marseille, France in its series AMSE Working Papers with number 1356.

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Length: 29 pages
Date of creation: Nov 2013
Date of revision: Nov 2013
Handle: RePEc:aim:wpaimx:1356
Contact details of provider: Web page: http://www.amse-aixmarseille.fr/en

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  1. Ingela Alger & Jörgen Weibull, 2009. "Kinship, Incentives and Evolution," Working Papers hal-00435431, HAL.
  2. Dubois, Pierre & Jullien, Bruno & Magnac, Thierry, 2008. "Formal and Informal Risk Sharing in LDCs: Theory and Empirical Evidence," CEPR Discussion Papers 6661, C.E.P.R. Discussion Papers.
  3. Ingela Alger & Jörgen W. Weibull, 2007. "Family ties, incentives and development: A model of coerced altruism," Carleton Economic Papers 07-10, Carleton University, Department of Economics, revised 2008.
  4. Bernheim, B Douglas & Stark, Oded, 1988. "Altruism within the Family Reconsidered: Do Nice Guys Finish Last?," American Economic Review, American Economic Association, vol. 78(5), pages 1034-45, December.
  5. Bloch, Francis & Genicot, Garance & Ray, Debraj, 2008. "Informal insurance in social networks," Journal of Economic Theory, Elsevier, vol. 143(1), pages 36-58, November.
  6. Coralio Ballester & Antoni Calvó-Armengol & Yves Zenou, 2006. "Who's Who in Networks. Wanted: The Key Player," Econometrica, Econometric Society, vol. 74(5), pages 1403-1417, 09.
  7. Quoc-Anh Do & Stephen Leider & Markus M. Mobius & Tanya Rosenblat, 2008. "Directed Altruism and Enforced Reciprocity in Social Networks," Working Papers 17-2008, Singapore Management University, School of Economics.
  8. Robert M. Townsend, . "Risk and Insurance in Village India," University of Chicago - Population Research Center 91-3a, Chicago - Population Research Center.
  9. Mark Rosenzweig & Andrew D. Foster, 1995. "Imperfect Commitment, Altruism, and the Family: Evidence from Transfer Behavior in Low-Income Rural Areas," Home Pages _075, University of Pennsylvania.
  10. Fafchamps, Marcel & Lund, Susan, 2003. "Risk-sharing networks in rural Philippines," Journal of Development Economics, Elsevier, vol. 71(2), pages 261-287, August.
  11. De Weerdt, Joachim & Dercon, Stefan, 2006. "Risk-sharing networks and insurance against illness," Journal of Development Economics, Elsevier, vol. 81(2), pages 337-356, December.
  12. Kazianga, H., 2006. "Motives for household private transfers in Burkina Faso," Journal of Development Economics, Elsevier, vol. 79(1), pages 73-117, February.
  13. Maurizio Mazzocco & Shiv Saini, 2012. "Testing Efficient Risk Sharing with Heterogeneous Risk Preferences," American Economic Review, American Economic Association, vol. 102(1), pages 428-68, February.
  14. Ligon, Ethan & Schechter, Laura, 2011. "Motives for Sharing in Social Networks," Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series qt4sn304b6, Department of Agricultural & Resource Economics, UC Berkeley.
  15. repec:cai:recosp:reco_p1993_44n5_0925 is not listed on IDEAS
  16. Cox, Donald & Fafchamps, Marcel, 2008. "Extended Family and Kinship Networks: Economic Insights and Evolutionary Directions," Handbook of Development Economics, Elsevier.
  17. repec:inr:wpaper:25314 is not listed on IDEAS
  18. Luc Arrondel & André Masson, 2002. "Altruism, Exchange or Indirect Reciprocity: What do the Data on Family Transfers Show?," DELTA Working Papers 2002-18, DELTA (Ecole normale supérieure).
  19. Joachim De Weerdt & Marcel Fafchamps, 2011. "Social Identity and the Formation of Health Insurance Networks," Journal of Development Studies, Taylor & Francis Journals, vol. 47(8), pages 1152-1177, June.
  20. Andrea Galeotti & Sanjeev Goyal & Matthew O. Jackson & Fernando Vega-Redondo & Leeat Yariv, 2010. "Network Games," Review of Economic Studies, Oxford University Press, vol. 77(1), pages 218-244.
  21. Voorneveld, Mark, 2000. "Best-response potential games," Economics Letters, Elsevier, vol. 66(3), pages 289-295, March.
  22. Manuela Angelucci & Giacomo De Giorgi, 2009. "Indirect Effects of an Aid Program: How Do Cash Transfers Affect Ineligibles' Consumption?," American Economic Review, American Economic Association, vol. 99(1), pages 486-508, March.
  23. Marcel Fafchamps & Flore Gubert, 2005. "The Formation of Risk Sharing Networks," Working Papers DT/2005/13, DIAL (Développement, Institutions et Mondialisation).
  24. Jean Mercier Ythier, 1993. "Équilibre général de dons individuels," Revue Économique, Programme National Persée, vol. 44(5), pages 925-950.
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