Intelligence, Racial Groups, & Inheritence

I found today a very interesting survey paper of differences of IQs between different racial groups. (jump to page 16)
http://faculty.mwsu.edu/psychology/Laura.Spiller/4503_Tests/intelligence_knowns_and_unknowns.pdf

(it also has interesting section of make/female differences. in short, higher testosterone = higher spatial/movement intelligence = lower verbal abilities. math differences are complex)

interesting points:
1- Asian Americans, while they have higher SAT/GRE/Academic scores, have the same average IQ.
2- Average IQ of kids in Taiwan, USA & Japan is the same (~101-105), even though Math test scores are higher in Japan & Taiwan.
3- Asian Americans achievements, had they been those of whites, indicate an average IQ of 120, about 20 points higher than the US average. This is a testimony that hard work and discipline can increase one achievements as if they are 20 points smarter.
4- Hispanic Americans average IQ is same as the rest of the US.
5- African Americans score about 15 points below average US IQ test, BUT more recent studies show that this difference is decreasing to about single digits. much discussion is included in the paper on possible explanations.

Another interesting finding (though still controversial): Most of the intelligence is inherited from the mother, not the father.
http://www.flatrock.org.nz/topics/men/thank_mom_for_brains.htm