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In this article, the authors use a special data set compiled for 60 U.S. metropolitan areas to examine 1970-1980 trends in the distribution of family income and shifts in the degree of segregation between income groups. They document how these changes contributed to increases in the spatial concentration of affluence and poverty during the 1970s and estimate simple descriptive models that connect these outcomes to broader socioeconomic trends in U.S. urban areas.
Massey et al. (Wed,) studied this question.