I'm not sure how you can do this kind of social research and be absolutely sure about the results you'll find, apart from taking a sample, measuring and trying to concatenate one fact with the other.
What nobody knows is the exact weight of this factor in the unknown equation which governs human intelligence. Hence from a scientific point of view:
"Those who assume hypotheses as first principles of their speculations […] may indeed form an ingenious romance, but a romance it will still be." - Roger Cotes.
Excerpt from the preface to Sir Isaac Newton’s Principia Mathematica, second edition, 1713.
What nobody knows is the exact weight of this factor in the unknown equation which governs human intelligence. Hence from a scientific point of view:
"Those who assume hypotheses as first principles of their speculations […] may indeed form an ingenious romance, but a romance it will still be." - Roger Cotes.
Excerpt from the preface to Sir Isaac Newton’s Principia Mathematica, second edition, 1713.