SoundaryFree IQ Test — 5-Domain Cognitive Battery, About 20 Minutes
Measure verbal, numerical, figural, working memory, and processing speed in about 20 minutes, converted to a deviation IQ (mean 100). Get domain strengths, weaknesses, and percentiles free.
What's included
- Time
- ~20 min
- Price
- Free
FAQ
How do I interpret my IQ score?
Deviation IQ is a relative score scaled to a mean of 100 and standard deviation of 15. About 68% of people fall between 85 and 115 (the average range); above 115 is roughly the top 16%, and above 130 the top 2%. It describes your position within a peer group, not a fixed level of ability.
Is an online IQ test the same as a clinical intelligence test?
No. Formal tests like the Wechsler scales (WAIS/WISC) are administered one-on-one by a trained examiner over one to two hours with standardized norms. This is a free self-check that samples the same cognitive domains briefly, so treat it as an estimate for reference — not a diagnosis or a basis for academic or employment decisions.
What does it mean if my five domain scores differ a lot?
Uneven cognitive profiles are actually common. If verbal and numerical scores are high but processing speed lags, timed tasks and sustained attention may cost you more than knowledge does. Looking at the spread between domains, rather than the total alone, helps you adapt how you study or work.
How often should I retake an IQ test?
Repeating the same items too often inflates scores through practice effects. Leave at least three to six months between attempts and test under similar conditions, avoiding sleep deprivation, alcohol, or exhaustion. When tracking change, look at the average and direction across several sessions rather than any single score.
Source
This task is based on the paradigm from: Wechsler, D. (1939). Deviation IQ scaling (mean 100, SD 15) / Raven, J. C. (1938). Matrix reasoning task / Carroll, J. B. (1993). CHC three-stratum theory of cognitive abilities · Spearman, C. (1904). General intelligence, objectively determined and measured. American Journal of Psychology, 15(2), 201–293. · Cattell, R. B. (1963). Theory of fluid and crystallized intelligence: A critical experiment. Journal of Educational Psychology, 54(1), 1–22. This task is a Soundary implementation based on a published academic paradigm. It is not any commercial test product or its test form.
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This is a self-screening tool, not a medical diagnosis. If the result concerns you, please consult a mental health professional.