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The Economic Impact of Social Ties: Evidence from German Reunification

  • Burchardi, Konrad B.
  • Hassan, Tarek

We use the fall of the Berlin Wall in 1989 to show that personal relationships which individuals maintain for non-economic reasons can be an important determinant of regional economic growth. We show that West German households who have social ties to East Germany in 1989 experience a persistent rise in their personal incomes after the fall of the Berlin Wall. Moreover, the presence of these households significantly affects economic performance at the regional level: it increases the returns to entrepreneurial activity, the share of households who become entrepreneurs, and the likelihood that firms based within a given West German region invest in East Germany. As a result, West German regions which (for idiosyncratic reasons) have a high concentration of households with social ties to the East exhibit substantially higher growth in income per capita in the early 1990s. A one standard deviation rise in the share of households with social ties to East Germany in 1989 is associated with a 4.7 percentage point rise in income per capita over six years. We interpret our findings as evidence of a causal link between social ties and regional economic development.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 8470.

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Date of creation: Jul 2011
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Handle: RePEc:cpr:ceprdp:8470
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  1. Marianne Bertrand & Erzo Luttmer & Sendhil Mullainathan, 1998. "Network Effects and Welfare Cultures," Working Papers 784, Princeton University, Department of Economics, Industrial Relations Section..
  2. Gabriel M. Ahlfeldt & Stephen J. Redding & Daniel M. Sturm & Nikolaus Wolf, 2012. "The Economics of Density: Evidence from the Berlin Wall," CEP Discussion Papers dp1154, Centre for Economic Performance, LSE.
  3. Esther Duflo & Emmanuel Saez, 2003. "The Role Of Information And Social Interactions In Retirement Plan Decisions: Evidence From A Randomized Experiment," The Quarterly Journal of Economics, MIT Press, vol. 118(3), pages 815-842, August.
  4. David Atkin, 2010. "Trade, tastes and Nutrition in India," Working Papers 986, Economic Growth Center, Yale University.
  5. Rauch, James E., 1999. "Networks versus markets in international trade," Journal of International Economics, Elsevier, vol. 48(1), pages 7-35, June.
  6. Lauren Cohen & Andrea Frazzini & Christopher Malloy, 2008. "The Small World of Investing: Board Connections and Mutual Fund Returns," Journal of Political Economy, University of Chicago Press, vol. 116(5), pages 951-979, October.
  7. Mevlude Akbulut-Yuksel, 2014. "Children of War: The Long-Run Effects of Large-Scale Physical Destruction and Warfare on Children," Journal of Human Resources, University of Wisconsin Press, vol. 49(3), pages 634-662.
  8. Besley, Timothy & Coate, Stephen, 1995. "Group lending, repayment incentives and social collateral," Journal of Development Economics, Elsevier, vol. 46(1), pages 1-18, February.
  9. Stephen Redding & Daniel M. Sturm, 2005. "The Costs of Remoteness: Evidence from German Division and Reunification," STICERD - Political Economy and Public Policy Paper Series 11, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
  10. 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.
  11. Steven Brakman & Harry Garretsen & Marc Schramm, 2004. "The strategic bombing of German cities during World War II and its impact on city growth," Journal of Economic Geography, Oxford University Press, vol. 4(2), pages 201-218, April.
  12. James E. Rauch & Vitor Trindade, 2002. "Ethnic Chinese Networks In International Trade," The Review of Economics and Statistics, MIT Press, vol. 84(1), pages 116-130, February.
  13. George J. Borjas, 2003. "The Labor Demand Curve Is Downward Sloping: Reexamining The Impact Of Immigration On The Labor Market," The Quarterly Journal of Economics, MIT Press, vol. 118(4), pages 1335-1374, November.
  14. Chaney, Thomas, 2011. "The Network Structure of International Trade," CEPR Discussion Papers 8240, C.E.P.R. Discussion Papers.
  15. Jeffrey R Kling & Jeffrey B Liebman & Lawrence F Katz, 2007. "Experimental Analysis of Neighborhood Effects," Econometrica, Econometric Society, vol. 75(1), pages 83-119, 01.
  16. Donald R. Davis & David E. Weinstein, 2002. "Bones, Bombs, and Break Points: The Geography of Economic Activity," American Economic Review, American Economic Association, vol. 92(5), pages 1269-1289, December.
  17. Dean Karlan & Markus Mobius & Tanya Rosenblat & Adam Szeidl, 2009. "Trust and Social Collateral," The Quarterly Journal of Economics, MIT Press, vol. 124(3), pages 1307-1361, August.
  18. David Card, 1989. "The Impact of the Mariel Boatlift on the Miami Labor Market," Working Papers 633, Princeton University, Department of Economics, Industrial Relations Section..
  19. Luigi Guiso & Paola Sapienza & Luigi Zingales, 2004. "Cultural Biases in Economic Exchange," NBER Working Papers 11005, National Bureau of Economic Research, Inc.
  20. Matt Jackson, 2003. "The Effects of Social Networks on Employment and Inequality," Theory workshop papers 658612000000000032, UCLA Department of Economics.
  21. Rachel M. Friedberg, 2001. "The Impact Of Mass Migration On The Israeli Labor Market," The Quarterly Journal of Economics, MIT Press, vol. 116(4), pages 1373-1408, November.
  22. Daron Acemoglu & Tarek A. Hassan & James A. Robinson, 2011. "Social Structure and Development: A Legacy of the Holocaust in Russia," The Quarterly Journal of Economics, Oxford University Press, vol. 126(2), pages 895-946.
  23. Kaivan Munshi, 2003. "Networks In The Modern Economy: Mexican Migrants In The U.S. Labor Market," The Quarterly Journal of Economics, MIT Press, vol. 118(2), pages 549-599, May.
  24. Anderson, T. W. & Hsiao, Cheng, 1982. "Formulation and estimation of dynamic models using panel data," Journal of Econometrics, Elsevier, vol. 18(1), pages 47-82, January.
  25. Edward Miguel & Gerard Roland, 2006. "The Long Run Impact of Bombing Vietnam," NBER Working Papers 11954, National Bureau of Economic Research, Inc.
  26. Greif, Avner, 1993. "Contract Enforceability and Economic Institutions in Early Trade: the Maghribi Traders' Coalition," American Economic Review, American Economic Association, vol. 83(3), pages 525-48, June.
  27. Yael V. Hochberg & Alexander Ljungqvist & Yang Lu, 2007. "Whom You Know Matters: Venture Capital Networks and Investment Performance," Journal of Finance, American Finance Association, vol. 62(1), pages 251-301, 02.
  28. Knack, Stephen & Keefer, Philip, 1997. "Does Social Capital Have an Economic Payoff? A Cross-Country Investigation," The Quarterly Journal of Economics, MIT Press, vol. 112(4), pages 1251-88, November.
  29. Attila Ambrus & Markus Mobius & Adam Szeidl, 2014. "Consumption Risk-Sharing in Social Networks," American Economic Review, American Economic Association, vol. 104(1), pages 149-82, January.
  30. Camelia M. Kuhnen, 2009. "Business Networks, Corporate Governance, and Contracting in the Mutual Fund Industry," Journal of Finance, American Finance Association, vol. 64(5), pages 2185-2220, October.
  31. Lori A. Beaman, 2012. "Social Networks and the Dynamics of Labour Market Outcomes: Evidence from Refugees Resettled in the U.S," Review of Economic Studies, Oxford University Press, vol. 79(1), pages 128-161.
  32. Claudia Martínez Alvear & Dean Yang, 2007. "Remittances and Poverty in Migrants’ Home Areas: Evidence from the Philippines," Working Papers wp257, University of Chile, Department of Economics.
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