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Kaj_Sotala comments on Innate Mathematical Ability - Less Wrong
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Just checking, but verbal and mathematical reasoning skills are positively correlated, right? This assertion seems to be supported by the fact that many (I'd go so far as to say nearly all) LW users have high verbal intelligence (as evidenced by the general quality of the comments here) and most of them seem to have high mathematical intelligence as well (as evidenced by the many posts on decision theory, game theory, and other fields of mathematics). If the two are correlated, do you know the coefficient of correlation?
One reference that also comes to mind is this box from Deary 2001. If we assume "verbal intelligence" to correspond to the "verbal comprehension" group factor in the diagram, and "mathematical reasoning" to correspond to its "perceptual organization" factor (since perceptual organization's associated subtests of picture completion, block design, matrix reasoning, and picture arrangement sound the most similar to Raven's matrices; though "arithmetic" is in the working memory factor) then if I'm thinking about this correct, those two group factors would share 65% (100 * 0.86^2 * 0.94^2) of their variance.