Our Methodology

Design principles

• Honest limits — We never claim clinical validity or population percentiles.
• Teach after every item — Explanations appear on the results page so missed questions become lessons.
• Progressive difficulty — Eight easy, nine medium, and eight hard items mirror a typical practice arc.
• Privacy-first flow — No email gate; scoring happens locally in your session.

Question structure

Each attempt draws a balanced mix of randomized questions spanning nine reasoning categories. Answer choices are shuffled per question. Every item has one defensible correct answer and a short explanation on the results page.

Want to preview formats? Visit practice IQ questions before the full run.

Scoring model

Weighted accuracy maps to an illustrative IQ-style score and band label for motivation. The mapping is monotonic—better performance yields a higher number—but it is not calibrated to WAIS, Stanford–Binet, or any published norm table. Read our IQ score chart guide for how clinical scales differ.

What we do not measure

Processing speed under strict proctoring, working memory span, long-form vocabulary depth, and emotional intelligence are outside our scope. For how cognitive tests differ from EQ, see IQ vs EQ. For professional pipelines, read how IQ tests work.

Using results responsibly

Track category strengths, review explanations, and retake when curious—not when anxious. If you need documentation for school, clinical, or employment purposes, seek licensed evaluation. Our accuracy guide explains why browser quizzes cannot replace that process.