So here's how you make an IQ test.
It's really easy, and everyone should know this, because you
need to know how these things work.
So imagine that you took a universal library of questions,
any sort of question, that required abstraction to solve.
Could be a general knowledge question, it could be a
vocabulary question, it could be a mathematical question.
It doesn't matter!
It could be a question about anything, as long as it
requires abstraction to solve.
So you have a universal library of those questions.
Then imagine you took a hundred questions at random from that
universal library, And you gave them to 500 people and then you
just totaled their scores, right?
Right wrong total total the scores then you rank ordered
the scores from highest performer to lowest performer
That's IQ.
That's all there is to it That's it And then what you'd
find is if you took another hundred questions from the same
library Randomly selected and gave them to the same 500
people and you'd have two rank orders Right from from the top
to the bottom the correlation between
the two rank orders would be about 0.9 It's unbelievably
high, it's unbelievably steep.