While I largely agree with you, I have to take issue with a couple of you points.<p>&gt; outperform simply giving a child a 10-minute pencil-and-paper IQ test  (and highly unlikely that scans will ever be cheaper or easier than a regular IQ test).<p>For children the test takes, &quot;48–65 minutes to administer&quot; and requires more than pencil-and-paper [1].<p>&gt; There is no reason whatsoever to do this.<p>More importantly, I think doing a regular comparison of the standard IQ test results with this new scanning method could be a good way to account for test bias [2].<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Wechsler_Intelligence_Scale_for_Children" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Wechsler_Intelligence_Scale_fo...</a><p>[2] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Intelligence_quotient#Test_bias" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Intelligence_quotient#Test_bia...</a>