Knowledge expansion:

Questionnaire, also known as questionnaire or inquiry form, is a printed document that systematically records the contents of the investigation in the form of questions. Questionnaires can be forms, cards or bookkeeping. Designing a questionnaire is the key to inquiry and investigation. A perfect questionnaire must have two functions, that is, it can convey the questions to the interviewee and the interviewee is willing to answer them. To accomplish these two functions, the questionnaire design should follow certain principles and procedures and use certain skills.

The first step of questionnaire design is to grasp the purpose and content of the survey, and the essence of this step is to clarify the information needed for questionnaire design. This is also the first step of scheme design. For researchers who are directly involved in the design of the research scheme, they can also skip this step and start from the second step of questionnaire design. However, for those researchers who have never participated in the scheme design, the first task when designing the questionnaire is to fully understand the purpose and content of this survey. Therefore, it is necessary to seriously discuss the purpose, theme and theoretical hypothesis of the research, read the research scheme carefully, consult and discuss with the scheme designer, and make the problem concrete, organized and operable, that is, turn it into a series of measurable variables or indicators.