<div dir="ltr"><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:rgb(0,0,0)">Well now, here's a thing: I read awhile back that the genetic diversity was far greater in African villages than it was in the entire USA. I don't know how to interpret that, but clearly the genes are there for all kinds of diversity including intellectual.<br><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:rgb(0,0,0)">As you point out, tests for people who have little to do with modern society are highly suspect at best. I did see some data where only nonverbal tests were used in Africa (not specifically with pygmies) that showed that the nonverbal skills were comparable with ours.<br><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:rgb(0,0,0)">Also, you can't compare African data with USA Afro-American data. There are many reasons given for the white-black IQ discrepancy here and I think it's just not known what factors are responsible. The liberals will put it down to environment and the conservatives to nature.<br><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:rgb(0,0,0)">Wackiest theory: the Afros who were picked up by the black and white traders were below average to begin with.<br><br></div><div class="gmail_default" style="font-family:comic sans ms,sans-serif;font-size:small;color:rgb(0,0,0)">Bill W<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, May 3, 2015 at 12:37 AM, Rafal Smigrodzki <span dir="ltr"><<a href="mailto:rafal.smigrodzki@gmail.com" target="_blank">rafal.smigrodzki@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><span class="">On Sat, May 2, 2015 at 12:00 PM, William Flynn Wallace <span dir="ltr"><<a href="mailto:foozler83@gmail.com" target="_blank">foozler83@gmail.com</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div style="font-family:comic sans ms,sans-serif;font-size:small;color:rgb(0,0,0)"><p class="MsoNormal">While discussing IQ with my undergrads I pointed out that IQ geniuses are in every population. Does that mean that somewhere in deepest Africa is a pygmy with a bone through his nose who has an IQ of 190 and is potentially the greatest mathematician since Fermat? Yes it does. Maybe there isn't, but there could be.</p></div></div></blockquote><div><br></div></span><div>### Highly unlikely. The IQ of pygmies is estimated at 53. I don't know the standard deviation of IQ among pygmies but if it was the same as among normal populations, an IQ of 190 would be more than 9 sigma above their average. I tried to use a couple of online normal distribution calculators but none were designed to go so far off the mean and all of them gave 0 as answer. As an example, an 8 sigma outlier is found with a probability of 4x10e-13.</div><div><br></div><div>Considering that the number of pygmies is less than a million, we can be expect with a likelihood of > 1-((4x10e-13)/1000000)= 0.9999996 that there are no pygmies with an IQ of 190 or higher.</div><div><br></div><div>Of course, this is a silly calculation - IQ tests are not properly normed for outlier populations, both far below and far above the average, so the true likelihood of extreme genius among pygmies is unknown but certainly very low.</div><div><br></div><div>Rafał</div></div>
</div></div>
<br>_______________________________________________<br>
extropy-chat mailing list<br>
<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a><br>
<a href="http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat" target="_blank">http://lists.extropy.org/mailman/listinfo.cgi/extropy-chat</a><br>
<br></blockquote></div><br></div>