The first formal Department of Sociology in the world was established in 1892 by Albion Small—from the invitation of William Rainey Harper—at the University of Chicago. The American Journal of Sociology was founded shortly thereafter in 1895 by Small as well.[34]
The institutionalization of sociology as an academic discipline, however, was chiefly led by Émile Durkheim, who developed positivism as a foundation for practical social research. While Durkheim rejected much of the detail of Comte's philosophy, he retained and refined its method, maintaining that the social sciences are a logical continuation of the natural ones into the realm of human activity, and insisting that they may retain the same objectivity, rationalism, and approach to causality.[35] Durkheim set up the first European department of sociology at the University of Bordeaux in 1895, publishing his Rules of the Sociological Method (1895).[36] For Durkheim, sociology could be described as the "science of institutions, their genesis and their functioning."[37]
Durkheim's monograph Suicide (1897) is considered a seminal work in statistical analysis by contemporary sociologists. Suicide is a case study of variations in suicide rates among Catholic and Protestant populations, and served to distinguish sociological analysis from psychology or philosophy. It also marked a major contribution to the theoretical concept of structural functionalism. By carefully examining suicide statistics in different police districts, he attempted to demonstrate that Catholic communities have a lower suicide rate than that of Protestants, something he attributed to social (as opposed to individual or psychological) causes. He developed the notion of objective social facts to delineate a unique empirical object for the science of sociology to study.[35] Through such studies he posited that sociology would be able to determine whether any given society is healthy or pathological, and seek social reform to negate organic breakdown, or "social anomie".
Sociology quickly evolved as an academic response to the perceived challenges of modernity, such as industrialization, urbanization, secularization, and the process of rationalization.[38] The field predominated in continental Europe, with British anthropology and statistics generally following on a separate trajectory. By the turn of the 20th century, however, many theorists were active in the English-speaking world. Few early sociologists were confined strictly to the subject, interacting also with economics, jurisprudence, psychology and philosophy, with theories being appropriated in a variety of different fields. Since its inception, sociological epistemology, methods, and frames of inquiry, have significantly expanded and diverged.[5]
Durkheim, Marx, and the German theorist Max Weber are typically cited as the three principal architects of sociology.[39] Herbert Spencer, William Graham Sumner, Lester F. Ward, W.E.B. Du Bois, Vilfredo Pareto, Alexis de Tocqueville, Werner Sombart, Thorstein Veblen, Ferdinand Tönnies, Georg Simmel, Jane Addams and Karl Mannheim are often included on academic curricula as founding theorists. Curricula also may include Charlotte Perkins Gilman, Marianne Weber, Harriet Martineau, and Friedrich Engels as founders of the feminist tradition in sociology. Each key figure is associated with a particular theoretical perspective and orientation.[40]