Early sociological writing about the city located the urban dimension within the broader compass of sociological theorizing. TÖNNIES, SIMMEL and WEBER in the 1890s addressed such issues as the characteristic forms of association and social life in urban environments, and the role of urban development in social change. With the establishment of the CHICAGO SCHOOL of sociologists in the 1920s, urban studies emerged as a distinct area of research. Focusing upon the issues of social order and organization, members of the Chicago school conducted empirical research into the social characteristics of different areas within the city. For example, research on the ZONE OF TRANSITION (the area bordering the central business district characterized by high levels of migration, social heterogeneity and poor housing stock) explored the relationships between the incidence of social problems such as crime, mental illness, alcoholism and social cohesion. Urban sociology demonstrated that:
Although the Chicago school established a rich empirical tradition, its theoretical deficiencies led to a decline in urban sociology between the 1940s and 1960s with the exception of a number of community studies showing urban neighbourhoods to have forms of association commonly associated with rural communities (Gans, 1962, called them ‘urban villages’). The theoretical poverty of the rural/urban typologies and the metropolitanization of society left urban sociology indistinguishable from the sociological analysis of advanced, industrial, capitalist societies. However, in the late 1960s urban sociology was revived under the influence of a new generation of (a) Weberian and (b) Marxist scholars: