To date there is no exact answer to this question. Because it is still necessary to take into account the errors that may occur - the moral and physical state when passing the test, and even the time of day, there are many of them. But anyone who is engaged in self-development, reads books and surrounds himself with intelligent people will see the dynamics in their development. I advise you to visit this site and take the test, and after a while to repeat it.
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