How is the study and education in Jiaozuo? Is volunteering reliable?

I heard that they used to use the product test evaluated by Founder of Peking University to be more accurate, but now MBTI is not so accurate. MBTI measures "psychological type" rather than "personality type", and measures the development of your psychological function. The test results before and after several times will be different, the test is unstable and the reliability is low. The test for adults or college students is not bad, but the test for teenagers is not suitable. The temperament type in the real personality test is stable, and it is a stable psychological feature that depends on the biological basis.

Personality in personality types is also a function of the brain, which has its biological constraints, and personality characteristics are always influenced by certain temperament types. Moreover, teenagers are in the stage of rapid development, temperament is innate, personality is the product of acquired, and personality has strong plasticity in this period, so it is more important to understand the temperament types of teenagers and the characteristics formed under unique genetic and environmental conditions. Therefore, an excellent evaluation product is aimed at a specific group of people, and not a product is suitable for all occupations.