Scientists Tie 52 Genes to Human Intelligence
&quot;But all of these genes together account for just a small percentage of the variation in intelligence test scores, the researchers found; each variant raises or lowers I.Q. by only a small fraction of a point.<p>&#x27;It means there’s a long way to go, and there are going to be a lot of other genes that are going to be important,&#x27; Dr. Posthuma said.&quot;<p>Indeed. This result is fully predictable from the several previous GWAS studies on IQ that have been done. Any gene that influences IQ in the general population has at most a small effect, and the variance among human individuals in IQ is the result of interaction of hundreds of genes and the environment the individual lives in.<p>Here&#x27;s a link to a lot of good writings by one of the leading researchers on human behavior genetics, for more details. I especially like one particular article I&#x27;ll link just below the link to his collected writings.<p><a href="http:&#x2F;&#x2F;people.virginia.edu&#x2F;~ent3c&#x2F;vita1_turkheimer.htm" rel="nofollow">http:&#x2F;&#x2F;people.virginia.edu&#x2F;~ent3c&#x2F;vita1_turkheimer.htm</a><p>Turkheimer, E. (2000). Three laws of behavior genetics and what they mean.  Current Directions in Psychological Science, 9, 160-164.<p><a href="http:&#x2F;&#x2F;people.virginia.edu&#x2F;~ent3c&#x2F;papers2&#x2F;Articles for Online CV&#x2F;(45) Turkheimer (2000).pdf" rel="nofollow">http:&#x2F;&#x2F;people.virginia.edu&#x2F;~ent3c&#x2F;papers2&#x2F;Articles for O...</a>