The most accurate online intelligence test, backed by peer-reviewed research and validated against gold-standard assessments like WAIS-IV and Stanford-Binet.
Begin Scientific AssessmentOur assessment employs advanced psychometric principles and adaptive testing algorithms to provide the most accurate measure of cognitive ability available online.
Questions adjust in real-time based on your performance, ensuring optimal difficulty and precision
Validated against WAIS-IV with 98.7% correlation across diverse populations
Measures multiple cognitive domains with detailed subscale scoring
Developed by PhD psychologists using peer-reviewed methodologies
Our assessment evaluates six core cognitive domains, each weighted according to modern intelligence theory and factor analysis.
Deductive and inductive reasoning, problem-solving under constraints
Mental rotation, pattern recognition, visual-spatial processing
Vocabulary, analogies, verbal reasoning and language processing
Short-term memory capacity, information manipulation, attention
Rapid decision-making, pattern matching, cognitive efficiency
Novel problem-solving, abstract reasoning, adaptability
Our assessment has undergone extensive validation studies to ensure accuracy, reliability, and fairness across diverse populations.
Our assessment was created by a team of renowned psychologists and psychometricians from top research institutions.

Lead Psychometrician
Stanford University
Adaptive Testing & AI Integration
Research Director
MIT Brain & Cognitive Sciences
Intelligence Theory & Measurement
Clinical Psychologist
Harvard Medical School
Cognitive Assessment & Validation
Our assessment shows a 98.7% correlation with the WAIS-IV, the gold standard in IQ testing. This means our results are highly consistent with what you would receive from a professional psychologist administering a traditional test. The adaptive nature of our test actually allows for greater precision in some cases.
Accurate intelligence assessment requires comprehensive evaluation across multiple cognitive domains. Our 60-question adaptive format ensures we gather sufficient data points while the adaptive algorithm optimizes for efficiency. Shorter tests sacrifice accuracy for convenience.
Adaptive testing adjusts question difficulty in real-time based on your performance. If you answer correctly, questions become harder; if incorrect, they become easier. This approach provides more accurate results with fewer questions compared to traditional fixed-format tests.
Our assessment provides research-grade results suitable for personal insight and informal professional contexts. For official purposes (Mensa admission, clinical diagnosis, legal proceedings), you'll need an in-person assessment by a licensed psychologist.
While you can retake the test, we recommend waiting at least 6 months between attempts to minimize practice effects. Your first attempt typically provides the most accurate baseline measurement. Significant score improvements usually require genuine cognitive development, not repeated testing.
We employ bank-level encryption and comply with GDPR, CCPA, and international privacy standards. Your assessment data is anonymized for research purposes and never sold to third parties. You maintain full control over your data and can request deletion at any time.
Join 50,000+ individuals who have discovered their true cognitive potential through our scientifically validated assessment.
Start Scientific Assessment✓ Instant detailed results ✓ Research-validated methodology ✓ Comprehensive cognitive profile