Posted by Christian on Friday, January 25, 2008 at 11:25am.
Here's a sample of what I found by Googling twin study IQ
http://www.newscientist.com/article/dn1520-iq-is-inherited-suggests-twin-study.html
http://wilderdom.com/personality/L4-1IntelligenceNatureVsNurture.html
http://www.lrainc.com/swtaboo/taboos/tjbouc01.html
http://everything2.com/index.pl?node_id=1162493
http://www.vdare.com/Sailer/pioneer.htm
http://en.wikipedia.org/wiki/Minnesota_Twin_Family_Study
There are some fascinating studies concerning twins IQ and homosexuality as well as birth order. Just google twin IQ studies.
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