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Spatial Patterns of Segregation: A Simulation of the Impact of Externalities between Households

  • Wolfgang Wagner

Usually, in monocentric city models, the spatial patterns of segregated ethnic groups are assumed to be ring-shaped, whereas in the 1930ies Hoyt showed that empirically wedge-shaped areas predominate. In contrast to Rose-Ackerman.s discussion of the in.uence within a ring-shaped pattern which the aversion which different households in the context of racism have, Yinger showed that, depending on the population mix, a wedge-shaped pattern may arise if it is border length which causes the spatial pattern. In this contribution, a simulation based on a monocentric city model with two or more different household groups is used to derive spatial patterns. Wedge-shaped segregation is shown to be the result of positive externalities among similar households. Differences between households only lead to ring-shaped patterns if the e¤ect of a city center on spatial structure dominates neighborhood e¤ects. If more than two groups of households are being considered, mixed patterns of concentric and wedge-shaped areas arise.

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Paper provided by Universität Potsdam, Wirtschafts- und Sozialwissenschaftliche Fakultät in its series Volkswirtschaftliche Diskussionsbeiträge with number 69.

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Date of creation: 2004
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Handle: RePEc:pot:vwldis:69
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  1. Rose-Ackerman, Susan, 1975. "Racism and urban structure," Journal of Urban Economics, Elsevier, vol. 2(1), pages 85-103, January.
  2. repec:sae:niesru:v:149:y::i:1:p:30-52 is not listed on IDEAS
  3. Miyao, Takahiro & Shapiro, Perry & Knapp, David, 1980. "On the existence, uniqueness and stability of spatial equilibrium in an open city with externalities," Journal of Urban Economics, Elsevier, vol. 8(2), pages 139-149, September.
  4. Miyao, Takahiro, 1978. "Dynamic Instability of a Mixed City in the Presence of Neighborhood Externalities," American Economic Review, American Economic Association, vol. 68(3), pages 454-63, June.
  5. Yinger, John, 1976. "Racial prejudice and racial residential segregation in an urban model," Journal of Urban Economics, Elsevier, vol. 3(4), pages 383-396, October.
  6. Loury, Glenn C., 1978. "The minimum border length hypothesis does not explain the shape of black ghettos," Journal of Urban Economics, Elsevier, vol. 5(2), pages 147-153, April.
  7. Paul M Torrens & David O'Sullivan, 2001. "Cellular automata and urban simulation: where do we go from here?," Environment and Planning B: Planning and Design, Pion Ltd, London, vol. 28(2), pages 163-168, March.
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