According to the traditional discipline definition standard, psychology must be able to make its theoretical system empirical, objective and engineering, so as to become a hall of science. The application of mathematical tools is a very important part.

Psychometrics is a very important sign that psychology has entered the third development stage: the experience stage. It mainly involves statistics and probability theory, and is used for scale compilation, error analysis and norm design. There are still many contents in advanced mathematics, especially probability theory. Therefore, psychology graduate students and above should take the advanced mathematics test.