On balance Asians have a Higher IQ than Caucasians

Con wants the opportunity to debate so I decided to present some ideas for discussion.IQ (intelligence quotient) specifically refers to a test score that attempts to measure intelligence. And, Asians have scored higher than Caucasians on these tests. So, it's irrefutable that Asians have a higher IQ than Caucasians. It's simply a fact.However, we can question the validity of the IQ test as a measurement of intelligence. Although I think there is some merit to this argument, I still think that IQ has a high correlation with intelligence although a high standard deviation due to environmental factors.Tests are culturally biased. I agree with this that the test is culturally biased. For example, if you're exposed to the concepts tested in the IQ test, you're going to be able to solve such problems when the IQ test is administered. Additionally, even language ability might be a huge factor. For example, a 100 years ago when Jewish immigrants started to come here in mass, many Americans considered them retarded. This is the same view that many Americans have with current immigrants. When you don't know the language, it's a huge hinderance in development at home.Intelligence can be learned. Research done by Flynn also suggests that intelligence is learned. In his research, Flynn has found that IQ has increased over time. What's interesting is that if we take the average person a 100 years ago and test his IQ today, his IQ would be 80. That's on the cusp of being considered mentally retarded! Flynn's research indicates that advancements in education has really increased intelligence over the decades. Then, we also consider how age comes into the picture. As people age past their adult peak, their IQ goes down. Age itself might be a factor as nueral connections start dying but my hunch is that the Flynn effect is at work here. As adults start doing the same job over and over, they don't work out their brain. As a result, they actually become dumber and dumber. It's an actual decrease in intelligence. When they get to 80, they actually can't comprehend complicated arguments because they simply don't work out their brain.Adopted asian children and genetic intellectual ability. Studies with generally adopted children have found that IQ correlates stronger with the biological mother than with the adopted mother. So, there is a definite genetic component to intelligence. However, adoption studies also show that the environment of the adopted child also has a huge effect. Adopted children in wealthy families lead to higher IQ's. What's really enlightening is one study of adopted Korean children. It was found that these kids had IQs that were about 20 points higher than the average American. This strongly suggests that genetically Koreans are smarter by at least 20 IQ points.Conclusion. My theory is that the brain is like a muscle. It's obvious that races differ in type of muscles they have. For example, it's been found that African Americans have higher density of white muscle fibers. But, someone who might genetically come from less athletically inclined parents can overcome this. They can work out and easily exceed in strength for someone who might inherently be stronger but hasn't worked out. And, then as people age, they work out less so the brain like muscles atrophy. Both genetics and environment comes into play. I guess the real question is what is the extent for each? If I had to make a wild guess, I would say genetics can increase or decrease your IQ by 20 points (given the asian adoption study) and environment can also increase/decrease this by another 20 points (given the Flynn study).