&gt; Why not just have your mate do an IQ test? People don&#x27;t mate at random: those who value intelligence will select intelligent mates.<p>&gt; For that matter, why pick race as your correlating factor? You could also correlate by college major, highest education attained, or wealth<p>There&#x27;s a little problem with that, because from what I know, there&#x27;s a regression to the mean in biology.<p>If two exceptionally tall Japaneses have children together, their children might be a little taller than their national mean, but they won&#x27;t be as tall as the parents.<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Jpmlqtnrec8" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Jpmlqtnrec8</a>