Want to know your real IQ score?
Cortex IQ is a visual-first cognitive assessment across 8 CHC-theory domains. 42 items, calibrated difficulty curves, and one precise score that reveals how you actually think.
Free to begin · results unlocked after completion
Eight domains. One profile.
CHC theory of intelligencePattern Recognition
Spotting the structure inside a visual sequence.
Logical Reasoning
Deductive chains and conditional logic.
Numerical Sequences
Finding the rule in a stream of numbers.
Spatial Rotation
3D rotations, cube nets, and orientation.
Working Memory
Holding and manipulating information under reveal.
Verbal Reasoning
Vocabulary, analogies, conceptual mapping.
Processing Speed
Rapid scanning and quick decisions.
Abstract Reasoning
Deriving novel rules from unfamiliar symbols.
How it works.
Answer 42 adaptive items
Easy → medium → hard → very hard within each domain. The hardest items only surface once you've proved fluency.
We capture 11 signals per question
Not just right or wrong — response time, indecision, re-reads, tab-switches. Your profile is granular.
See your IQ + domain radar
A calibrated IQ score, percentile, and the eight-domain radar showing where your cognition shines.
Most IQ tests online are vibes. This one isn't.
Cortex items were written from scratch against the Cattell-Horn-Carroll model of cognitive ability. Every item has a documented weight, a discrimination signal, and a calibrated difficulty curve — the same principles behind the WAIS and Raven's Progressive Matrices.
- 11 signals / questionCompetitors capture 3
- 60% visual stimuliHigher completion, less text fatigue
- Adaptive difficultyDifferentiates top 15% from top 5%
- Calibrated to 2.3M sampleReal percentiles, not made-up
Ready to see your number?
15 minutes. One score. No noise. Take the assessment now — results are delivered the moment you finish.
Begin the assessment