Interesting new genetic study says so...
http://www.printthis.clickability.co...artnerID=73272
For an environmental/cultural/social/historical alternative to 'genetic' theories (genetic theories scare me!) see:
http://www.mugu.com/cgi-bin/Upstream...ve/sowell.html
Also, maybe intelligence is a function of historical evolution--many of the groups viewed as 'highly intelligent' were ghettoized and marginalized into occupations that forced them to have strong mental and business skills. Examples: Jews in Europe, Chinese in Southeast Asia, Lebanese in Africa, Asian Indians in Africa and Southeast Asia. These middlemen cultures routinely placed emphasis on education and academic aptitude since their livelihoods were non-agricultural and due to frequent pogroms/expulsions (Chinese were periodically massacred and brutalized in SE Asia as well as Asian Indians) they focused on high intellectual trades and professions (medicine and traders/bankers, etc).
I like the latter explanation...not any genetic or hard coded explanations.
What do you guys think?