Psychological testing is more widely used in society, which tests a person's mental ability and quality. There are a lot of companies will use psychological testing as one of the means of selection, testing a person's upbringing and ability to see things.
Psychological testing also plays a big role in education, through psychological testing can detect a person's level of knowledge, as well as the ability to withstand the psychological pressure and mental capacity, to help solve the student's psychological problems, and correctly lead the child in the right direction.
In the police case, psychological testing also plays a very important role, psychologists can observe people's facial expressions, body movements and speed of speech, etc., to be able to determine whether the offender is lying, to solve the case to play an auxiliary role.
Psychological testing has a diagnostic role in clinical medicine of mental illness, can understand the psychological characteristics of people and psychological problems, targeted treatment measures to improve the chances of recovery.
There are also many small psychological tests in daily life that can help detect a person's psychology, the reason why psychological tests are considered accurate is because people's acceptance of psychological tests to improve the psychological tests play a blind obedience effect, once you believe it, the heart will produce psychological hints, unconsciously interfering with their own behavior, which is a cognitive dissonance phenomenon.
So,, there are two main, one is the ability to test, and another is the personality test, the person's emotions, character, interests, motivation and other aspects can be identified.