About IQ

Have you ever taken IQ tests?
Many people should have been in elementary school.
However, there are few people who taught the results of IQ.
It is not the original purpose of finding the ranking of academic ability according to the result of IQ, but it seems that the role of seeking "the level of mental age" in a specific group was good.

Basics of IQ
The original basis of IQ was that "the actual age of that person is more than the mental age".
For example, if a person whose age is 15 is 15 years old, IQ is normal if it is 15 years old.
If that person is 15 years old, and if it is a mental age of 20 years old, IQ will be higher.
The reverse is true, though I am 15 years old, IQ will be lower if I am 12 years old mental age.
It was for digitizing the mental age in such a form.
So it was a criterion for getting a mental age so as not to hinder our daily life with simple graphics problems and sentence problems.

An era when the theory of IQ was established
At the time, the absolute IQ value (a way to measure the position of the person's ability in reference to a certain criterion) was mainstream, but with the transition of the era, the relative IQ value How the position of a person is) was calculated and spreading ways.
It is because it is important to live in various groups in daily life, but it is necessary to have a spirit of decent daily life in that group.

However, in recent years, from the meaning of IQ = "mental age" IQ = "brain level" has changed.
As many people are imagined, IQ = becoming the level of the brain, it has become.

More recently, there seems to be "EQ" to measure human beings from the mental point rather than "IQ" which measures the level of the brain.
It seems to be due to the idea that even if you have a good brain, if you do not have the spirit, it is not as good as a human being.