什么是 Free IQ Test？
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 α85–.92 (near clinical-grade reliability) Two versions: ⚡ Quick Test – 15 questions, ~12 minutes 📝 Precision Test – 40 questions, ~28 minutes
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