"Some very valuable research has been carried out using classical IQ testing. However, IQ is a massive oversimplification of the spectrum of human cognitive ability"
This means that the classical IQ test shouldn't be thrown out the window, but it can be modified to create more accurate measurements. John Gabrieli, a PhD professor of brain and cognitive science at MIT in Boston, reviewed the study.
“This is a really compelling study of an extraordinarily large number of people taking tests with a careful data analysis. It makes the case against the idea that IQ is localized in one part of the brain. We imagine that there is THE test of intelligence, but you can measure it in many ways. One measure may make a person seem super-intelligent, but if they picked another, they may seem average. There are multiple kinds of intelligence that can link to various tasks and different parts of the brain.”It seems to me that there will never be a test that is completely accurate in measuring different components of IQ, because the brain is ever changing especially from person to person.