A LIBRARY FOR YOUR CURIOSITY
Guides to IQ, reasoning and learning
Before interpreting a number, understand where it comes from. Explore the guides and check their sources.
What is IQ, and what does a reasoning test measure?
Understand the difference between IQ, reasoning and correct answers, including what a matrix reasoning task can and cannot tell you.
Read the guideOnline IQ tests: How to check their quality
Check an online test's methodology, norms, precision and administration conditions before interpreting a score or sharing your information.
Read the guideHow to interpret a reasoning test result
Read a worked OMIB report example: Correct answers, responses, omissions and duration. Learn what the result means and why it is not an IQ score.
Read the guideHow to practise reasoning and learn from mistakes
Plan useful logic exercises, review your strategies and keep practice separate from assessment, without promises of increasing your IQ.
Read the guideBooks for learning: How to choose and what to check
Choose books on learning, judgement and critical thinking using clear criteria and identified examples, without promises of increasing IQ.
Read the guideLogic games for adults: Criteria and examples
Compare puzzles, planning games and brain teasers by how you want to play, with clear buying criteria and no claims about raising IQ.
Read the guideHow to prepare for a reasoning test session
Check your purpose, instructions, screen and practice tasks before starting. A useful checklist for this free pilot and questions for other providers.
Read the guideCulture-fair tests: What can a matrix task promise?
A test without vocabulary still has a context. Separate language, format, accessibility and the evidence needed to compare scores across groups.
Read the guideIQ percentiles: What they mean and what they do not
Separate percentile ranks, percentage correct and IQ scores. Check the reference population and understand why this pilot reports no percentiles.
Read the guideAverage IQ: What a mean of 100 and 15-point spread mean
Why many IQ tests use a mean of 100 and standard deviation of 15. Worked explanations of the scale without converting your correct answers into IQ.
Read the guide