Perhaps he was "thinking this as he read it" because I actually use the fitness analogy at some point myself!
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So, first, I don't think laypeople (or many scientists!) would predict that all cog. tests would correlate positively; ...
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perhaps we just have competing intuitions here (though the popularity of e.g. Gardner would seem to back me up). ...
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Second, the magnitude of g is interesting in itself- 50% of the variance is really quite substantial and more interesting...
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than just some weak positive correlations. In any case, the book discusses alternative conceptions of g (e.g Thomson) and...
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also the importance of specific abilities. But it doesn't linger on those issues, because I don't think they're...
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super-important to deal with at the moment when there are so many misconceptions about what IQ tests predict/correlate with.
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So, given your pal says I do a good job of that latter question, FIVE STARS PLEASE!
End of conversation
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