In my last 2 posts in this series about the history of the IQ test, I discussed the history and conception of the modern IQ test from the early half of the Twentieth Century.
Over the last 100 years, there have been many variations and revisions to some of the earlier IQ tests from the 1900’s. One of the commonly accepted IQ tests, called the Stanford-Binet IQ Test, is currently in its 5th revision. This revision included the re-norming of the test based on 4,800 individuals across a wide demographic sector of the population. This study took into account demographic bias such as gender, ethnicity, culture, region, and socio-economic status. Age is also an inherent factor in all valid IQ test calculations.
The Stanford-Binet test is comprised of 5 different subsections measuring Fluid Reasoning, Knowlege, Quantitative Reasoning, Visual-Spatial Processing, and Memory.
In comparison, our scientifically validated IQ Test and Kids IQ Test also measure similar factors, but are validated using a much wider audience. Our latest version of the Kids IQ Test, for example, is validated with over 100,000 test-takers. That validation group is over 20 times higher than the revised Stanford-Binet test.