OpenCognitive

A transparent measure of human reasoning.

Measure fluid intelligence and visuospatial rotation through a clinically calibrated, open-source psychometric instrument.

Student Research Project DisclaimerThis tool is a student project developed for educational research in cognitive psychometrics. The estimated scores generated by this instrument are illustrative simulations and must never be used as a substitute for professional clinical testing or diagnostic evaluation by a licensed psychologist.

24 items~12 minutes

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Calculations run entirely in your local browser. No response harvesting or account logins.

Diverse Scales

Covers Matrix Reasoning, 3D Rotation, Letter/Number sequences, and Verbal Syllogisms.

IRT Bayesian Scoring

Uses calibrated 2PL/3PL models and EAP ability scoring to estimate latent theta (θ).