Jordan Peterson contends that I.Q. testing provides the most accurate available measure of potential for academic and career attainment, accounting for about 25% of the variation in life outcomes.

“essentially what the psychometricians have discovered is and established and I think more credibly than any psychologists have established any other phenomenon within the field of psychology is that there's a common mechanism or an emergent property that appears to characterize activity”

Dr. Kaufman asserts that while I.Q. tests are the most valid form of psychological measurement available, they are not perfect and can sometimes misrepresent the capacity of neurodiverse individuals.

“I do want to still leave that window open for us to what's absolutely fair enough look there's as and as we already pointed out iq is only covering 25 of the relative relevant territory and the tests are by no means perfect and there are people who are measured whose capacity is measured improperly”