Adaptive Cognitive Intelligence Test
A computerized adaptive test (CAT) employing Item Response Theory (IRT) for precision measurement of fluid intelligence. Features a calibrated 120-item bank, real-time ability estimation using Maximum A Posteriori (MAP), and adaptive item selection to minimize standard error while maximizing measurement efficiency.
Scientific Disclaimer
This is a demonstration platform designed for educational purposes. While it implements sophisticated psychometric methodologies (IRT, CAT, MAP estimation), it cannot replace professionally-administered assessments. Valid IQ testing requires controlled conditions, trained examiners, and norm-referenced standardization (WAIS-IV, Stanford-Binet, Raven's APM). Results should be interpreted as approximate estimates with significant error margins (±15-20 IQ points).
Adaptive Algorithm
Real-time item selection based on IRT information functions. Each question is optimally calibrated to your estimated ability level (θ).
MAP Estimation
Maximum A Posteriori Bayesian estimation provides stable ability estimates even with limited responses, using prior distributions.
120-Item Bank
Calibrated question pool with psychometric parameters (difficulty b, discrimination a) spanning the full ability spectrum.
Precision Testing
Stops when Standard Error of Measurement (SEM) reaches target threshold, ensuring reliable ability estimates.
Multi-Domain
Assesses fluid intelligence across visual-spatial, numerical-quantitative, and verbal-logical reasoning domains.
Full Report
Comprehensive psychometric analysis including confidence intervals, percentiles, domain subscales, and measurement precision.
Psychometric Specifications
Identify the pattern:
Assessment Complete
Comprehensive Psychometric Analysis
Performance Summary
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Psychometric Properties
Cognitive Profile
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Interpretation Guidelines
IQ scores represent a snapshot of cognitive ability under specific conditions. These estimates are influenced by educational background, cultural context, test-taking experience, and current psychological state. This adaptive assessment provides a research-grade estimate but should not be used for clinical, educational, or employment decisions without professional evaluation.