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alllifes jeybeeleft a comment
I got frustrated with online IQ tests that were either full of ads, hidden paywalls, or had no scientific basis whatsoever. So I built one from scratch using actual psychometric standards: - Raven's Progressive Matrices (the gold standard since 1936) - CHC Theory framework - Proper normal distribution scoring with error function percentiles The hardest part was calibrating difficulty across 9...
Free IQ TestScience-based IQ test · Instant results · 100% free no login
Most free IQ tests online are full of ads, paywalls, or scientifically questionable.
We built a genuinely free, science-based alternative:
🧩 Based on Raven's Progressive Matrices & CHC Theory
📊 Normal distribution scoring (mean 100, SD 15)
🎯 Cronbach's α .85–.92 (near clinical-grade reliability)
Two versions:
⚡ Quick Test – 15 questions, ~12 minutes
📝 Precision Test – 40 questions, ~28 minutes
Free IQ TestScience-based IQ test · Instant results · 100% free no login