L'étrange carrière de la notion de classe sociale dans la tradition de Chicago en sociologie
The article examines the different uses made of the concept of social class by researchers of the Chicago School between the turn of the century and the 1940s. The concept of social class is found in Small and Cooley, rarely referred to by Park, and not found at all in the urban sociology work he inspired in the 1920s (Shaw and McKay, etc.) However it reappears in the work on race relations at the end of the 1930s (Frazier, Hughes). Substitutes were introduced in the 1920s to explain internal differentiation within American cities. The spread of new methods of documentation favoured its reappearance in social-political and scientific contexts at the end of the 1930s. This example suggests that an order of phenomena which aims to explain a concept like social class—which is both a scientific and a lay person's concept—can only be ignored for a short time by a program of empirical research. The conclusion stresses the heterogeneity of factors which take into account the transmission and non-transmission of this type of idea from one generation of sociological researchers to another.