In-depth, expert-reviewed guides on IQ scores, intelligence testing, demographics and how to take a test — from the IQCognify editorial team.
Just got an IQ score? A plain-English guide to interpreting your own result — what your percentile means, whether the number is 'good', and what it does and doesn't predict about you. (For the at-a-glance reference table, see the IQ score chart.)
How accurate are free online IQ tests really? What they can and can't tell you, how they compare to clinical tests, and how to read your result honestly.
What IQ actually measures, where the concept came from, the g-factor, how modern IQ tests work, and the limits of a single intelligence number.
The average IQ is 100 by definition — but what does 'average' really mean, how is it set, and how does it vary by age, country and education?
Sample IQ test questions with worked answers across pattern recognition, number series, logical and spatial reasoning — practice before you take the real test.
