Marx pointed out that there are several ways of scientific research.

Questionnaire survey, interview, experiment, observation, literature, etc. ?

Methodology is a theory about methods, which discusses the instrumentality, intermediary, conduction function and application principle of methods for various methods, and enhances researchers' awareness of methods.

The methodology of social science is the methodology for people to engage in social science research. It studies the essence of social phenomena and the particularity of social science research based on humanities and social problems, enhances people's awareness of methodology, helps people better understand and choose methods, and improves the level of social science research.

type

According to the different purposes, tasks and methods of research work, scientific research is usually divided into the following types:

1, basic research. It is a discussion of new theories and principles, aiming at discovering new scientific fields and providing theoretical premise for new technological inventions.

2. Applied research. It is to apply the new theories found in basic research to the research of specific goals. It is the continuation of basic research, and its purpose is to open up specific application channels for the achievements of basic research and transform them into practical technologies.

3. Development and research. Also known as development research, it is the research that applies basic research and applied research to production practice, and it is the central link of transforming science into productive forces.

Basic research, applied research and development research are three interrelated links in the whole scientific research system, which develop harmoniously in a country and a professional field.