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Dynamic Models of Segregation in Small-World Networks

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Author Info
Giorgio Fagiolo () (Sant'Anna School of Advanced Studies, Pisa)
Marco Valente () (University of L'Aquila)
Nicolaas J. Vriend () (Queen Mary, University of London)

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Abstract

Schelling (1969, 1971a,b, 1978) considered a simple proximity model of segregation where individual agents only care about the types of people living in their own local geographical neighborhood, the spatial structure being represented by one- or two-dimensional lattices. In this paper, we argue that segregation might occur not only in the geographical space, but also in social environments. Furthermore, recent empirical studies have documented that social interaction structures are well-described by small-world networks. We generalize Schelling's model by allowing agents to interact in small-world networks instead of regular lattices. We study two alternative dynamic models where agents can decide to move either arbitrarily far away (global model) or are bound to choose an alternative location in their social neighborhood (local model). Our main result is that the system attains levels of segregation that are in line with those reached in the lattice-based spatial proximity model. Thus, Schelling's original results seem to be robust to the structural properties of the network.

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Publisher Info
Paper provided by Queen Mary, University of London, Department of Economics in its series Working Papers with number 589.

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Date of creation: Mar 2007
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Handle: RePEc:qmw:qmwecw:wp589

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Related research
Keywords: Spatial proximity model Social segregation Schelling Proximity preferences Social networks Small worlds Scale-free networks Best-response dynamics

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Find related papers by JEL classification:
C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
D62 - Microeconomics - - Welfare Economics - - - Externalities

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This page was last updated on 2008-10-2.


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