timtyler comments on BHTV: Eliezer Yudkowsky & Razib Khan - Less Wrong

12 Post author: MichaelGR 06 February 2010 02:27PM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Comments (66)

You are viewing a single comment's thread. Show more comments above.

Comment author: timtyler 06 February 2010 11:23:19PM *  -1 points [-]

Here's an example of the kind of thing I mean:

"There is "a highly significant association" between the CHRM2 gene and intelligence according to a 2006 Dutch family study. The study concluded that there was an association between the CHRM2 gene on chromosome 7 and Performance IQ, as measured by the Wechsler Adult Intelligence Scale-Revised. The Dutch family study used a sample of 667 individuals from 304 families.[59] A similar association was found independently in the Minnesota Twin and Family Study (Comings et al. 2003) and by the Department of Psychiatry at the Washington University.[60]"

So: "We are not finding any IQ genes" seems to be rather inaccurate.

Comment author: timtyler 07 February 2010 10:32:57AM *  0 points [-]

I note that there has been at least one negative finding for the same gene:

"No Association Between Cholinergic Muscarinic Receptor 2 (CHRM2) Genetic Variation and Cognitive Abilities in Three Independent Samples."

http://www.medicine.manchester.ac.uk/research/PubDetails/index.aspx?ID=37741

The study appears to be looking at SNPs - though it tracks quite a number of them. Possibly the relevant variation has a geographic component.