This paper considers the formation of risk-sharing networks. Following empirical findings, we build a model where risk-sharing takes place between pairs of individuals. We ask what structures emerge when pairs can agree to form links, but people cannot coordinate links across a population. We consider a benchmark model where identical individuals commit to share their monetary holdings equally with linked partners. We compare efficient networks to equilibrium networks. Efficient networks can (indirectly) connect all individuals and involve full insurance. However, equilibrium networks connect fewer individuals. There is an externality: when breaking a link individuals do not take into account the negative effect on others distant in the network. The network formation process can lead identical individuals to be in different positions and thus have different risk-sharing outcomes. These results may help explain empirical findings that risk-sharing is often not symmetric or complete.
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- Marcel Fafchamps & Susan Lund, 2000.
"Risk-Sharing Networks in Rural Philippines,"
Economics Series Working Papers
10, University of Oxford, Department of Economics.
- Rothschild, Michael & Stiglitz, Joseph E., 1971. "Increasing risk II: Its economic consequences," Journal of Economic Theory, Elsevier, vol. 3(1), pages 66-84, March.
- Coate, S. & Ravallion, M., 1989. "Reciprocity Without Commitment: Characterization and Performance of Informal Risk-Sharing Arrangements," Papers 96, Warwick - Development Economics Research Centre.
- Francis Bloch (GREQAM and Universite de la Mediterranee), Garance Genicot (Georgetown University, and Debraj Ray (New York University and Instituto de Analisis Economico (CSIC)), 2004.
"Informal Insurance in Social Networks,"
gueconwpa~04-04-16, Georgetown University, Department of Economics.
- Stefan Dercon & Joachim De Weerdt, 2002.
"Risk-sharing Networks and Insurance against illness,"
Economics Series Working Papers
WPS/2002-16, University of Oxford, Department of Economics.
- 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.
- Stefan Dercon & Joachim De Weerdt, 2002. "Risk-sharing networks and insurance against illness," CSAE Working Paper Series 2002-16, Centre for the Study of African Economies, University of Oxford.
- Stefan Dercon & Joachim de Weerdt, 2004. "Risk-Sharing Networks And Insurance Against Illness," Development and Comp Systems 0409019, EconWPA.
- Townsend, Robert M, 1994.
"Risk and Insurance in Village India,"
Econometric Society, vol. 62(3), pages 539-91, May.
- Townsend, R.M., 1991. "Risk and Insurance in Village India," University of Chicago - Economics Research Center 91-3, Chicago - Economics Research Center.
- Robert M. Townsend, . "Risk and Insurance in Village India," University of Chicago - Population Research Center 91-3a, Chicago - Population Research Center.
- Udry, Christopher, 1995. "Risk and Saving in Northern Nigeria," American Economic Review, American Economic Association, vol. 85(5), pages 1287-1300, December.
- Garance Genicot & Debraj Ray, 2003.
"Group Formation in Risk-Sharing Arrangements,"
Review of Economic Studies,
Oxford University Press, vol. 70(1), pages 87-113.
- Kimball, Miles S, 1988. "Farmers' Cooperatives as Behavior Toward Risk," American Economic Review, American Economic Association, vol. 78(1), pages 224-32, March.
- Rosenzweig, Mark R. & Stark, Oded, 1987.
"Consumption Smoothing, Migration and Marriage: Evidence from Rural India,"
7515, University of Minnesota, Economic Development Center.
- Rosenzweig, Mark R & Stark, Oded, 1989. "Consumption Smoothing, Migration, and Marriage: Evidence from Rural India," Journal of Political Economy, University of Chicago Press, vol. 97(4), pages 905-26, August.
- Coate, Stephen & Ravallion, Martin, 1993. "Reciprocity without commitment : Characterization and performance of informal insurance arrangements," Journal of Development Economics, Elsevier, vol. 40(1), pages 1-24, February.
- Matthew O. Jackson & Asher Wolinsky, 1994.
"A Strategic Model of Social and Economic Networks,"
1098, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- De Weerdt, Joachim, 2002. "Risk-Sharing and Endogenous Network Formation," Working Paper Series UNU-WIDER Research Paper , World Institute for Development Economic Research (UNU-WIDER).
- de Janvry, Alain & Sadoulet, Elisabeth & Winters, Paul C. & Murgai, Rinku, 2000.
"Localized and Incomplete Mutual Insurance,"
12905, University of New England, School of Economics.
- Kirman, Alan, 1993. "Ants, Rationality, and Recruitment," The Quarterly Journal of Economics, MIT Press, vol. 108(1), pages 137-56, February.
- Jackson, Matthew O., 1998.
"The Evolution of Social and Economic Networks,"
1044, California Institute of Technology, Division of the Humanities and Social Sciences.
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