IQ Test — Accurate Intelligence Assessment

This test uses scientifically validated question types (progressive matrices, spatial reasoning, digit span) and Item Response Theory scoring. While it provides a reliable estimate of cognitive ability, it is not a substitute for a professionally administered test like the WAIS-IV.

The test uses adaptive difficulty and IRT scoring to maximize accuracy. The 95% confidence interval shown with your results indicates the precision of your score. For most test-takers, accuracy is within ±5-8 IQ points.

IQ scores follow a normal distribution with a mean of 100 and standard deviation of 15. A score of 100 means average intelligence. About 68% of people score between 85 and 115, and about 95% score between 70 and 130.

Yes. All questions use abstract visual patterns, shapes, and numbers — no language comprehension, vocabulary, or cultural knowledge is required. This design is inspired by the Cattell Culture Fair Intelligence Test.

The full test takes approximately 15–20 minutes to complete, with about 60 tasks across 6 sections. Short breaks are offered between sections.

Yes, you can retake the test as many times as you like. Your results history is saved locally on your device. Note that practice effects may slightly inflate scores on repeated attempts.