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Explore logic, pattern recognition, numerical or verbal reasoning and memory using only item sets with separately verified permissions and evidence.

Every test below has its own source, scoring model and evidence label.
A 10-item public-domain IPIP scale measuring the breadth of your interest in learning, culture and challenging material.
A focused 10-item public-domain IPIP scale exploring how strongly you are drawn toward complex ideas, reflective inquiry and abstract material.
A 24-question original performance challenge across four reasoning formats, scored by objective answer keys without converting the result into an IQ or population percentile.