If 1 to 2 is particularly typical, the design structure is generally acceptable, and the problem about 15 to be studied generally needs more than 30 people to pursue universality or group research can be appropriately increased.

Interview, also known as interview, refers to the basic psychological research method of understanding the psychology and behavior of the interviewee through face-to-face conversation between the interviewer and the interviewee. Because of the different nature, purpose or object of the research question, interview methods have different forms. According to the standardization of interview process, it can be divided into structured interview and unstructured interview. Various interview methods.

The general steps of interview method:

1. Determine the content target of the interviewee.

2. Know the interviewee.

3. Formal interview.

4. Summarize the evaluation interview and form a report.

Characteristics of interview methods:

1, you can have a more detailed understanding of workers' work attitude and motivation.

2. It has a wide range of applications and can simply and descriptively collect all kinds of job analysis data.

3. The incumbent tells the work content in person, which is specific and accurate.

4. It helps managers find problems by letting job analysts know that they are not easy to find by directly observing them in a short time.

5. Explain the necessity and role of job analysis for on-the-job personnel.

6. It helps to communicate with employees and relieve work pressure.