As certain individuals have pointed out, IQ tests are not an accurate measure of intelligence and it's difficult to impose that kind of testing on other cultures and compare results. Having a low IQ doesn't make one stupid or unintelligent. IQ tests largely test for abstract thinking, creativeness and quickness of thought. While these standards may be associated with intelligence in one culture, it might not be the case in another. As a result IQ tests suffer a lot from cultural biases