52051
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Children's IQ tests are watered down. The scaling is done with people in the same age as the test-taker, but the test itself is easier that the ones given to adults.
Also, your last statement is completely incorrect. IQ scores becomes more aligned to genetics as you age due to the higher complexity of questions found in adult IQ tests. This is why Asian prep and cram schools play no role in adult IQ.
Its funny with such low congative ability you stilll try to act as if you know something:
Let me repeat it again:
(1) Chinese pupils in 1990s scores barely better (97 or so) like your little sample, China's national IQ grow significantly comparing to the americans, due to the rise of living conditions.
(2)There is no high complexity problem in adult IQ tests, most international tests on IQ nowadays using the same test for both adult and children, they just rescale the score by age.
(3) Most of the Chinese in the US are from Guangdong due to historical reasons, see the differnece of province IQ of China, Guangdong is well belong average province there, and obviously english language is a problem for them to take IQ tests in English (especially verb part) if you even know how good the english average adult Chinese americans there speaks.