BEFORE YOU BEGIN

Assessment instructions

There are 100 questions (Comprehensive mode). Choose the best answer to each one. Working-memory prompts disappear after a brief viewing period. Progress is saved in this browser session.

Work without assistance, calculators or reference material. You may skip a question, but unanswered items count toward the descriptive total. Short tests have high uncertainty. The 250-question tier provides the greatest descriptive detail across 12 categories, but no tier is yet calibrated or independently validated as an IQ test.