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IQ tests and the testing of intelligence levels was devised by French psychologists in the early 1900s to help describe differences in how well and quickly children learn at school. Defined loosely, intelligence refers to our ability to learn quickly and adapt to new situations. IQ tests measure vocabulary, ability to problem-solve, reason logically and so on. IQ scores were only interesting because it was thought that IQ was fixed for life.
The standard IQ tests used by clinical psychologists for diagnostic purposes, such as the Weschler scale, are designed in such a way that it is not easy to prepare for them. The contents are kept surprisingly secret and they are changed regularly. The score given for an individual is a relative one, adjusted based on the performance of people of the same age.
But even as we become better educated and more skillful at the types of tasks measured on IQ tests (a phenomenon known as the “Flynn effect”, after James Fylnn who first noted it) our IQs stay pretty much the same. This is because the IQ scoring system takes into account the amount of improvement expected over time, and then discounts it. This type of score is called a “standardised score” – it hides your true score and merely represents your standing in relation to your peers who have also been getting smarter at about the same rate.
This apparent stability in IQ scores makes intelligence look relatively constant, whereas in fact we are all becoming more intelligent across and within our lifetimes. The IQ test and the IQ scoring system are constantly adjusted to ensure that the average IQ remains at 100, despite a well-noted increase in intellectual ability worldwide.
The idea that a kids or adults IQ is fixed for life is built into the questionable politics of IQ testing. The most serious consequence of this is the use of IQ tests to blame educational difficulties on students rather than on teaching systems. But it is the job of psychologists to find better ways to teach, not to find better ways to justify the poor performance of students. This particular use of IQ tests has caused one leader in the field of intelligence research, Robert Sternberg, to refer to IQ testing as “negative psychology” in a 2008 article.
IQ Can Be Improved
Those who still beleive that IQ is fixed for life have managed to ignore decades of published research in the field of applied behaviour analysis. This has reported very large IQ gains in children with autism who have been exposed to early intensive behavioural interventions once they have been diagnosed with learning difficulties. Another 2009 Norwegian study examined the effects of an increase in the duration of compulsory schooling in Norway in the 1960s which lengthened the time in education for Norwegians by two years. The researchers used records of cognitive ability taken by the military to calculate the IQ of each individual in the study. They found that IQ had increased by 3.7 points for every extra year of education received. More recent studies by John Jonides and his colleagues at the University of Michigan reported improvements in objective measures of intelligence for those who practised a brain-training task called the “n-back task” – a kind of computerised memory test.
As a co-founder of RaiseYourIQ and the SMART brain training course, Doctor Bryan Roche has conduced his own research, in the field of relational frame theory, which has shown that understanding relations between words, such as “more than”, “less than” or “opposite” is crucial for our intellectual development. One recent pilot study showed that IQ scores can be raised by 20-30 points by training children in relational language skills tasks over a period of months. Again, this finding challenges the idea that intelligence is fixed for life.
Now is the time to dispell the idea that IQ as a trait that cannot be changed. Undoubtedly, there may be some limits to the development of our intellectual skills. But in the short term, the socially responsible thing to do is not to feel bound by those limits, but to help every child work towards and maximize their intellectual ability. Read more science into RaiseYourIQ.