Sociology is the scientific study of human society, its origins, structure, functions, and development. It uses methods like surveys, questionnaires, interviews, and case studies to collect empirical data and gain insights into social behavior and institutions. Some key approaches in sociology include evolutionary, interactionist, functionalist, and conflict perspectives. Scientific research in sociology follows steps such as defining a problem, reviewing literature, formulating hypotheses, developing a research design, collecting and analyzing data, and drawing conclusions.