Measure your cognitive reasoning with 40 questions across 3 domains.
Modern IQ tests measure fluid reasoning — the ability to solve novel problems independent of learned knowledge. This test uses matrix-style logic puzzles, numerical sequences and verbal analogies across three domains, modeled on approaches validated in psychometric research such as Raven's Progressive Matrices. Scores are normed so that 100 is the population average with a standard deviation of 15: about 68% of people score between 85 and 115, and roughly 2% score above 130.
A single online test is an estimate, not a clinical assessment — fatigue, distraction and familiarity with puzzle formats can shift results by several points. Retesting when rested typically gives a more stable picture. Professional assessments (WAIS-IV, Stanford-Binet) administered by psychologists remain the standard for diagnostic use.
Can IQ change? Fluid intelligence peaks in early adulthood and declines slowly, while crystallized knowledge keeps growing for decades. Education, sleep and cardiovascular health all measurably influence cognitive performance.
Why 40 questions? Enough items across difficulty levels to place scores reliably while keeping the test under 25 minutes.