S. A. Alam and C. C. Pörtner, Income shocks, contraceptive use, and timing of fertility, Journal of Development Economics, vol.131, pp.96-103, 2018.

A. Alesina, L. Ferrara, and E. , Participation in heterogeneous communities, The Quarterly Journal of Economics, vol.115, issue.3, pp.847-904, 2000.

A. Alesina, L. Ferrara, and E. , Who trusts others?, Journal of Public Economics, vol.85, issue.2, pp.207-234, 2002.

S. Anderson and J. Baland, The economics of roscas and intrahousehold resource allocation, The Quarterly Journal of Economics, vol.117, issue.3, pp.963-995, 2002.

T. Andrabi and J. Das, In aid we trust: Hearts and minds and the Pakistan earthquake of, Review of Economics and Statistics, vol.99, issue.3, pp.371-386, 2005.

M. Angelucci and G. De-giorgi, Indirect effects of an aid program: How do cash transfers affect ineligibles' consumption?, American Economic Review, vol.99, issue.1, pp.486-508, 2009.

M. Angelucci, G. De-giorgi, M. Rangel, and I. Rasul, Insurance and investment within family networks, BREAD Working Paper, issue.260, 2010.

O. Attanasio, A. Barr, J. C. Cardenas, G. Genicot, and C. Meghir, Risk pooling, risk preferences, and social networks, American Economic Journal: Applied Economics, vol.4, issue.2, pp.134-67, 2012.

J. Baland, C. Guirkinger, and C. Mali, Pretending to be poor: Borrowing to escape forced solidarity in Cameroon. Economic Development and Cultural Change, vol.60, pp.1-16, 2011.

O. Bandiera and I. Rasul, Social networks and technology adoption in northern Mozambique, The Economic Journal, vol.116, issue.514, pp.869-902, 2006.

A. Barr, Trust and expected trustworthiness: Experimental evidence from Zimbabwean villages, The Economic Journal, vol.113, issue.489, pp.614-630, 2003.

L. Becchetti, S. Castriota, and P. Conzo, Disaster, aid, and preferences: The long-run impact of the tsunami on giving in Sri Lanka, World Development, vol.94, pp.157-173, 2017.

C. Bjørnskov, Determinants of generalized trust: A cross-country comparison, Public choice, vol.130, issue.1, pp.1-21, 2007.

J. C. Buggle and R. Durante, Climate risk, cooperation, and the co-evolution of culture and institutions, 2017.

J. Cai, A. De-janvry, and E. Sadoulet, Social networks and the decision to insure, American Economic Journal: Applied Economics, vol.7, issue.2, pp.81-108, 2015.

A. C. Cameron and D. L. Miller, A practitioner's guide to cluster-robust inference, Journal of Human Resources, vol.50, issue.2, pp.317-372, 2015.

L. Cameron and M. Shah, Risk-taking behavior in the wake of natural disasters, Journal of Human Resources, vol.50, issue.2, pp.484-515, 2015.

A. Cassar, A. Healy, V. Kessler, and C. , Trust, risk, and time preferences after a natural disaster: Experimental evidence from Thailand, World Development, vol.94, pp.90-105, 2017.

M. Castillo and M. Carter, Behavioral responses to natural disasters, 2011.

T. G. Conley and C. R. Udry, Learning about a new technology: Pineapple in Ghana, American Economic Review, vol.100, issue.1, pp.35-69, 2010.

S. Di-falco, F. Feri, P. Pin, and X. Vollenweider, Ties that bind: Network redistributive pressure and economic decisions in village economies, Journal of Development Economics, vol.131, pp.123-131, 2018.

M. Fafchamps and S. Lund, Risk-sharing networks in rural Philippines, Journal of Development Economics, vol.71, issue.2, pp.261-287, 2003.

D. A. Fleming, A. Chong, and H. D. Bejarano, Trust and reciprocity in the aftermath of natural disasters, The Journal of Development Studies, vol.50, issue.11, pp.1482-1493, 2014.

C. Grootaert, D. Narayan, V. N. Jones, and M. Woolcock, Measuring social capital: An integrated questionnaire, 2004.

A. Islam and C. Nguyen, Do networks matter after a natural disaster? A study of resource sharing within an informal network after Cyclone Aila, Journal of Environmental Economics and Management, vol.90, pp.249-268, 2018.

P. Jakiela and O. Ozier, Does Africa need a rotten kin theorem? Experimental evidence from village economies. The Review of Economic Studies, vol.83, pp.231-268, 2015.

C. Kinnan and R. Townsend, Kinship and financial networks, formal financial access, and risk reduction, American Economic Review, vol.102, issue.3, pp.289-93, 2012.

,. Le-pennec, G. A. Ruiz, P. Ramón, E. Palacios, P. Mothes et al., Impact of tephra falls on Andean communities: The influences of eruption size and weather conditions during the 1999-2001 activity of Tungurahua volcano, Journal of Volcanology and Geothermal Research, vol.217, pp.91-103, 2012.
URL : https://hal.archives-ouvertes.fr/hal-01170193

A. Leigh, Does equality lead to fraternity? Economics letters, vol.93, pp.121-125, 2006.

E. Ligon, J. P. Thomas, and T. Worrall, Informal insurance arrangements with limited commitment: Theory and evidence from village economies, The Review of Economic Studies, vol.69, issue.1, pp.209-244, 2002.

D. J. Mckenzie, Measuring inequality with asset indicators, Journal of Population Economics, vol.18, issue.2, pp.229-260, 2005.

A. Morrone, N. Tontoranelli, and G. Ranuzzi, How good is trust? Measuring trust and its role for the progress of societies, OECD Statistics Working Papers, p.3, 2009.

D. Roodman, M. Ø. Nielsen, J. G. Mackinnon, and M. D. Webb, Fast and wild: Bootstrap inference in Stata using boottest, The Stata Journal, vol.19, issue.1, pp.4-60, 2019.

K. Samphantharak and S. Chantarat, The effects of natural disasters on household's preferences and behaviors: Evidence from Thai farmers during and after the 2011 mega flood, 2014.

M. Shoji, Incentive for risk sharing and trust formation: Experimental and survey evidence from, Bangladesh Oxford Economic Papers, vol.70, issue.4, pp.1062-1083, 2018.

J. Stone, J. Barclay, P. Simmons, C. , P. D. Loughlin et al., Risk reduction through community-based monitoring: the vigías of Tungurahua, Ecuador Journal of Applied Volcanology, vol.3, issue.1, pp.1-14, 2014.

V. Sword-daniels, J. Wardman, C. Stewart, T. Wilson, D. Johnston et al., Infrastructure impacts, management and adaptations to eruptions at volcán Tungurahua, 1999.

R. M. Townsend, Risk and insurance in village India, Econometrica, vol.62, issue.3, pp.539-591, 1994.

H. Toya and M. Skidmore, Do natural disasters enhance societal trust?, Kyklos, vol.67, issue.2, pp.255-279, 2014.

T. Wilson, G. Kaye, C. Stewart, C. , and J. , Impacts of the 2006 eruption of Merapi volcano, 2007.

. Worldbank, Disaster risk management in Latin America and the Caribbean region: GFDRR country notes -Ecuador (english). GFDRR country notes, 2012.

. Roodman, Control variables include age, gender, education, and risk aversion of the household head, and household size