Conditions for the establishment of sociology:

1. The need for social change (direct causes and key factors)

2. Accumulation of social experience research (practice)

3. Promote the development of natural science (theory)

4. Establish a pioneer in social research

Major schools

First of all, the Chicago school

Small founded the Department of Sociology at the University of Chicago on 1892, which is the first sociology department in the world.

Second, the structure-function theory

It was the most important school during the economic crisis and the Second World War (1930s).

Parsons is the author of Social Action and the Structure of Social System.

It is believed that society has four necessary functions: adapting to economic commitments, achieving politics, integrating society, and educating religion by maintaining a model.

Merton is the author of Social Theory and Social Structure.

It is believed that social function has explicit function and implicit function.