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Measuring Spatial Focusing in a Migration System

Overview
Journal Demography
Specialty Public Health
Date 1997 May 1
PMID 9169281
Citations 5
Authors
D A Plane
G F Mulligan
Affiliations
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Abstract

Equality indexes used in other geographical contexts may be used to gauge the degree of spatial focusing in an entire migration system or within the gross in- and out-migration fields of specific regions. They provide useful indicators of overall shifts in the patterns of interregional migration and can help give insight into the population redistributive roles played by specific regions. Perhaps the most common equality index used to measure income distribution is the Gini coefficient, yet it appears almost never to have been applied in migration research. In this paper we set forth a variety of Gini indexes to be used for different migration analyses and illustrate their application with recent data on U.S. interstate movements. We argue that the Gini index provides some singularly useful insights that differ from those afforded by other measures more commonly found to date in the migration analyst's tool kit.

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Changing Spatial Interconnectivity during the "Great American Migration Slowdown": A Decomposition of Intercounty Migration Rates, 1990-2010.

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Temporal and spatial variation in age-specific net migration in the United States.

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