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These characteristics of cities, Wirth argued, have important social and psychological consequences for the people who live in them. Louis Wirth, an American sociologist, defined a city as a "permanent settlement of relatively large size, relatively high population density, and relatively diverse population with respect to social and economic status, race, and culture." Wirth's definition of a city is based on three characteristics that distinguish cities from rural areas: large size, high population density, and social stratification and heterogeneity.Īccording to Wirth, the large size and high population density of cities create a sense of anonymity and impersonality among residents, and the social stratification and heterogeneity of cities create a sense of diversity and complexity.
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