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"IQ is heritable, but the catch is that it may, in fact, only be heritable through the mother's half of the genes contributed to the child [1]." Do you have a

"IQ is heritable, but the catch is that it may, in fact, only be heritable through the mother's half of the genes contributed to the child [1]." Do you have a source for this that isn't, um, from the Simpsons? Geneticists have an equation for estimating the response to selection, the change in IQ from parent to offspring, and it uses an average of both parents' IQ. See http://en.wikipedia.org/wiki/Heritability#Response_to_Selection http://en.wikipedia.org/wiki/Heritability#Response_to_Select... for the equation. IQ is somewhat more malleable initially, but it seems to converge on a point set by one's genetics, by adulthood. The APA estimated heritability in childhood at .45 and .75 by adulthood.

jonnathanson 15y ago
"Do you have a source for this that isn't, um, from the Simpsons?" My Simpsons reference was meant to be a colorful analogy, and not a "source." Sheesh. The source for my statement was journal article I read a few months back. I can't seem to track it down online, but here's a blog that summarizes the studies: http://flatrock.org.nz/topics/men/thank_mom_for_brains.htm http://flatrock.org.nz/topics/men/thank_mom_for_brains.htm Like I said, the jury is still out on this. This is a relatively new hypothesis, and not a long-standing theory.
- guimarin 15y ago
  this so called 'new hypothesis' has been around for more than 50 years. It was just not written about because people couldn't accept the consequences have accepting that it was a possibility.
- porfirio 15y ago
  Novel claims require evidence. Here is another link: http://discovermagazine.com/2005/oct/sex http://discovermagazine.com/2005/oct/sex There are more genes related to intelligence on the X chromosome than on just the X and Y chromosomes. There are still 22 other pairs of chromosomes, which in offspring, are a mishmash of the father and mother's chromosomes. Genes on these chromosomes have been experimentally linked with intelligence (eg, http://genepi.qimr.edu.au/contents/p/staff/CV453.pdf http://genepi.qimr.edu.au/contents/p/staff/CV453.pdf) Plus, there are sex differences in intelligence; there are more male dullards and geniuses. Men score higher on visuospatial ability, and women on verbal ability. Given that these are distinctly sex related, their genesis lies in differences between the X and Y chromosomes.

jonnathanson 15y ago

"Do you have a source for this that isn't, um, from the Simpsons?" My Simpsons reference was meant to be a colorful analogy, and not a "source." Sheesh. The source for my statement was journal article I read a few months back. I can't seem to track it down online, but here's a blog that summarizes the studies: http://flatrock.org.nz/topics/men/thank_mom_for_brains.htm http://flatrock.org.nz/topics/men/thank_mom_for_brains.htm Like I said, the jury is still out on this. This is a relatively new hypothesis, and not a long-standing theory.

guimarin 15y ago
this so called 'new hypothesis' has been around for more than 50 years. It was just not written about because people couldn't accept the consequences have accepting that it was a possibility.
porfirio 15y ago
Novel claims require evidence. Here is another link: http://discovermagazine.com/2005/oct/sex http://discovermagazine.com/2005/oct/sex There are more genes related to intelligence on the X chromosome than on just the X and Y chromosomes. There are still 22 other pairs of chromosomes, which in offspring, are a mishmash of the father and mother's chromosomes. Genes on these chromosomes have been experimentally linked with intelligence (eg, http://genepi.qimr.edu.au/contents/p/staff/CV453.pdf http://genepi.qimr.edu.au/contents/p/staff/CV453.pdf) Plus, there are sex differences in intelligence; there are more male dullards and geniuses. Men score higher on visuospatial ability, and women on verbal ability. Given that these are distinctly sex related, their genesis lies in differences between the X and Y chromosomes.