IIF Certified Assessment
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IIF Certified Assessment
This is the most comprehensive assessment on IQ Metrics — one of eight formats on the IQ Tests page, and the only one that samples all four cognitive domains in depth. It takes about 20 minutes and returns a full IQ score with a percentile ranking and a per-domain breakdown, not just a single number.
Excellent 4.8/51 million+ test takers
A composite score drawn from four distinct abilities is a more stable, more meaningful estimate than any single-domain score on its own. These domains are grounded in decades of cognitive-testing research — read more about our approach on the About page.
Relationships between words and ideas — analogies, categories, and the logic carried by language rather than the size of your vocabulary.
Doctor : Hospital :: Teacher : ?Quantitative pattern recognition — series logic, proportion and rate. It tests whether you can find the rule, not whether you can do arithmetic quickly.
2 · 4 · 8 · 16 · ?Mental rotation and three-dimensional visualisation — holding a shape in mind, turning it, and recognising it from an angle you were never shown.
Which net folds into this cube?Rule deduction from non-verbal evidence — working out how a matrix of shapes transforms across rows and columns, then applying that rule to a case you have not seen.
Complete the 3×3 matrixYour result combines performance across all four domains into a single composite IQ score — the same conceptual approach used by standard multi-domain cognitive batteries.
One sample item per domain, in the same style as the real test. This doesn’t count toward your score — the real test progresses from easier to harder questions as you go.
Doctor : Hospital :: Teacher : ?
The pattern links a professional to their primary workplace: a doctor is associated with a hospital, so a teacher is associated with a school. “Chalkboard” and “diploma” are objects, and “student” is a person the teacher interacts with — neither is a workplace.
2, 4, 8, 16, ?
Each term is double the one before it: 2 → 4 → 8 → 16 → 32. The rule is multiplicative, not additive — 18, 20 and 24 are built by adding a fixed amount, which tests whether you found the actual operation or just a plausible-looking next number.
Which option is the mirror image of the shape shown?
A mirror image flips the shape across a vertical axis without rotating it — Option B. Option C is the shape unchanged, and Options A and D are rotations (180° and 90°): they preserve the same “handedness” as the original, which a true reflection never does.
Complete the 3×3 matrix — how many dots belong in the missing cell?
Every row and every column adds one dot moving left to right and top to bottom (1, 2, 3 in row one; 2, 3, 4 in row two). The bottom row runs 3, 4 — so the missing cell continues the same rule and must contain 5 dots.
These four picks don’t add up to a score of any kind — they’re here so you know what to expect before you start the real thing.
Submit the test and you land on a results page built around four things.
One number on the standard 100/15 scale, combining your performance across all four domains into a single result.
See where your composite falls relative to the general population — “top 9%” tells you more than a raw number on its own.
Separate results for verbal, numerical, spatial and abstract reasoning, so you can see exactly where you’re strongest.
A visual marker showing exactly where your score sits on the normal distribution — the same curve explained below.
~40 questions · ~20 minutes · instant results
Every Classical IQ Test result is calculated using standard psychometric scoring, then mapped onto a scale with a mean of 100 and a standard deviation of 15. For more on our methodology, see How IQ Tests Work.
Figure 1. The standard IQ scale: mean 100, standard deviation 15. The shaded region spans one standard deviation either side of the mean and contains 68.2% of the population.
| Score range | Classification | Share of people | What it indicates |
|---|---|---|---|
| Below 85 | Below Average | ~15% | Below the typical range on this scale. |
| 85 – 99 | Average | ~34% | The most common range just under the mean. |
| 100 – 114 | Above Average | ~35% | The most common range just above the mean. |
| 115 – 129 | High | ~14% | Well above typical performance. |
| 130+ | Very High | ~2% | Rare — roughly 1 in 50 people. |
Percentages are approximate and describe a normal distribution with the boundaries shown.
Your score reflects performance on this specific assessment on this specific day. It’s a reliable estimate, not a clinical diagnosis. For the longer explanation, read Understanding Your IQ Score.
Your answers are scored server-side against the standard scale immediately — mean 100, standard deviation 15 — and you get your composite score, percentile and per-domain breakdown on the spot. Our IQ Bell Curve page shows exactly how that score maps onto the wider population.
This is a self-administered screening tool that uses the same question types and scoring methodology as standard cognitive batteries. It provides a reliable estimate of your cognitive ability. For a clinical-grade assessment, consult a licensed psychologist. We never claim equivalence to any specific named instrument. See our IQ Test Accuracy page for the margin of error involved.
Yes, but your most accurate result is typically your first attempt. Repeated testing on the same platform can inflate scores due to familiarity with question styles, not genuine ability gains. Our IQ Score Over Time tool is built for tracking genuine, well-spaced retests.
Classical is the only format that samples all four domains — verbal, numerical, spatial and abstract — in depth in one sitting, which is why it’s the one that returns a full composite score with a per-domain breakdown. The other formats trade breadth for speed, a single domain, or a specific audience. Our IQ Tests hub compares all eight side by side.
Yes — verbal, numerical and spatial reasoning are each also available as standalone single-domain tests. They return a percentile for that one ability rather than a composite IQ score, which is useful if you already know which domain you want to check. Our Verbal IQ Test is one example.
The verbal domain necessarily depends on English vocabulary and idiom, so non-native speakers may see that section underrepresent their reasoning ability. If language could be a factor for you, our Culture-Fair IQ Test removes it entirely, testing only abstract and spatial pattern reasoning.
Only after checking they’re on the same scale — some platforms use a standard deviation of 15, others 24, so the same relative standing produces a different raw number. Our IQ Score Converter converts between scales directly, and IQ Comparison shows how a score sits against different reference groups.
Yes — your raw performance is compared against a norm group of a similar age, since fluid reasoning speed and crystallized knowledge shift across the lifespan in different directions. Our IQ and Age tool breaks down how that adjustment works.
No — use the age-specific version instead. Children’s reasoning abilities are still developing, so the Kids IQ Test uses dedicated age-band norms across ages 4–17 rather than comparing a child’s raw performance against the adult scale.
Likely yes, and that’s expected rather than a sign the first result was wrong. Extreme scores are more affected by chance and off-day factors, so a retest tends to land closer to your true average — a statistical pattern called regression to the mean, not evidence of a real change in ability. See our Regression to the Mean page for how this plays out in practice.
The Classical Test is the full profile. If you want something narrower, compare all eight formats on the IQ Tests page, or jump straight to one of these.
Vocabulary, word relationships and verbal logic on their own — a focused deep-dive, not a substitute for the composite.
Mental rotation and visual pattern completion, isolated from the other three domains.
Number series and quantitative pattern logic on their own — pattern recognition, not arithmetic speed.
All four domains, compressed under a hard clock, for a quick directional estimate.
Age-appropriate items across all four domains, ages 4–17, with age-normed scoring.
Abstract and spatial pattern reasoning only — nothing to read, nothing to calculate, so vocabulary is never the bottleneck.
Four domains, one composite score, a percentile ranking and a per-domain breakdown — ready the moment you submit.
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