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http://ssrn.com/abstract=227610
 
 

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Network Effects and Welfare Cultures


Marianne Bertrand


University of Chicago - Booth School of Business; National Bureau of Economic Research (NBER); Centre for Economic Policy Research (CEPR)

Erzo F. P. Luttmer


Dartmouth College; National Bureau of Economic Research (NBER); Institute for the Study of Labor (IZA)

Sendhil Mullainathan


Harvard University - Department of Economics; National Bureau of Economic Research (NBER)

December 1998

NBER Working Paper No. w6832

Abstract:     
This paper empirically examines the role of social networks in welfare participation. Social theorists from across the political spectrum have argued that network effects have given rise to a culture of poverty. Empirical work, however, has found it difficult to distinguish the effect of networks from unobservable characteristics of individuals and areas. We use data on language spoken to better infer an individual's network within an area. Individuals who are surrounded by others speaking their language have a larger pool of available contacts. Moreover, the network influence of this pool will depend on their welfare knowledge. We, therefore, focus on the differential effect of increased contact availability: does being surrounded by others who speak the same language increase welfare use more for individuals from high welfare using language groups? The results strongly confirm the importance of networks in welfare participation. We deal with omitted variable bias in several ways. First, our methodology allows us to include local area and language group fixed effects and to control for the direct effect of contact availability; these controls eliminate many of the problems in previous studies. Second, we instrument for contact availability in the neighborhood with the number of one's language group in the entire metropolitan area. Finally, we investigate the effect of removing education controls. Both instrumentation and removal of education controls have little impact on the estimates.

Number of Pages in PDF File: 50

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Date posted: July 20, 2000  

Suggested Citation

Bertrand, Marianne and Luttmer, Erzo F. P. and Mullainathan, Sendhil, Network Effects and Welfare Cultures (December 1998). NBER Working Paper No. w6832. Available at SSRN: http://ssrn.com/abstract=227610

Contact Information

Marianne Bertrand (Contact Author)
University of Chicago - Booth School of Business ( email )
5807 S. Woodlawn Avenue
Chicago, IL 60637
United States
773-834-5943 (Phone)
HOME PAGE: http://gsbwww.uchicago.edu/fac/marianne.bertrand/vita/cv_0604.pdf
National Bureau of Economic Research (NBER) ( email )
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
617-588-0341 (Phone)
617-876-2742 (Fax)
Centre for Economic Policy Research (CEPR)
77 Bastwick Street
London, EC1V 3PZ
United Kingdom
Erzo F.P. Luttmer
Dartmouth College ( email )
Hanover, NH 03755
United States
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
Institute for the Study of Labor (IZA)
P.O. Box 7240
Bonn, D-53072
Germany
Sendhil Mullainathan
Harvard University - Department of Economics ( email )
Littauer Center
Cambridge, MA 02138
United States
617-496-2720 (Phone)
617-495-7730 (Fax)
National Bureau of Economic Research (NBER) ( email )
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
617-588-1473 (Phone)
617-876-2742 (Fax)
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