Comments on: The use of heritability in policy development http://www.gnxp.com/new/2011/12/13/the-use-of-heritability-in-policy-development/ Genetics Tue, 03 Apr 2018 05:20:42 +0000 hourly 1 https://wordpress.org/?v=3.8.27 By: Chuck http://www.gnxp.com/new/2011/12/13/the-use-of-heritability-in-policy-development/#comment-2843 Fri, 23 Dec 2011 18:00:47 +0000 http://www.gnxp.com/wp/?p=1432#comment-2843 For me, the most salient example of the usefulness of heritability research comes from examination of the heritability of IQ among children. Among high socioeconomic status families, the heritability tends to be high.”

If you look at studies from developing regions like Yunnan (PRC), you will see that the heritability of IQ is low in children too; but, by adulthood, it rises to .75. (It hopefully need not be said that if a lack of enriched environment had a lasting impact, then you would not have an adult heritability of 0.75 in these regions.)

]]> By: Chuck http://www.gnxp.com/new/2011/12/13/the-use-of-heritability-in-policy-development/#comment-2842 Fri, 23 Dec 2011 17:38:18 +0000 http://www.gnxp.com/wp/?p=1432#comment-2842 Lost in correlations, again. Sesardic has a great chapter on that. So, Peter Visscher’s method generates a narrow heritability estimate that’s not subject to these types of objections. It’s a true estimate of the lower bounds of variance explained by additive genetics. That hasn’t been getting through, I guess. For example, see “Does brain plasticity trump innateness?” a few post down. Does anyone know of a good critique of the Visscher method? Am I missing something.

]]> By: Steve Sailer http://www.gnxp.com/new/2011/12/13/the-use-of-heritability-in-policy-development/#comment-2841 Thu, 22 Dec 2011 02:17:52 +0000 http://www.gnxp.com/wp/?p=1432#comment-2841 The current policy debate conventional wisdom is that anybody who points out that Mr. MaGoo is a bad driver because he doesn’t wear glasses is an evil sightist.

]]> By: JL http://www.gnxp.com/new/2011/12/13/the-use-of-heritability-in-policy-development/#comment-2840 Thu, 15 Dec 2011 19:00:33 +0000 http://www.gnxp.com/wp/?p=1432#comment-2840 Among high socioeconomic status families, the heritability tends to be high. Among low socioeconomic status families, it is significantly lower.

Some studies have found the contrary to be true (for verbal ability): http://www.sciencedirect.com/science/article/pii/S0160289605000218

]]>