Free
After the nine tasks
- All 9 tasks, no sign-up
- Overall IQ estimate
- A shareable profile name
- GAI and the gap (GAI − FSIQ)
GAIvsIQ Laboratory · no sign-up
Free online IQ test
About 30 minutes. Nine tasks in the browser, no account. You get an overall IQ estimate and a cognitive profile — a named pattern on this sitting. Not a WAIS, WISC, or diagnosis.
Already have a WISC or WAIS report? Use the GAI calculator
This estimate is for personal understanding and cannot be used for medical diagnosis.
- 9 tasks · about 30 minutesEach task is a few minutes. You do not have to finish in one sitting.
- Phone-friendly · resume by taskIt runs in the browser. Stop after any task and come back later.
- CHC model · GAI vs Full Scale IQFive domains, then two composites: the usual IQ, and reasoning without memory or speed.
How it works
How the test is used
Sit the nine tasks. There is no countdown and no account. The free result is an overall IQ estimate and a profile name. The gap is subtraction.
1
Start the nine tasks
No account. About 30 minutes in the browser. Stop after any task and come back later.
2
Read the free result
An overall IQ estimate and a profile name. GAI and the gap sit under that name. Not a diagnosis.
3
Open the reading if you want it
The one-time sheet explains the pattern: domain scores, task scores, GAI, CPI, and where reasoning sits versus memory and speed.
The sheet
What you can read
Free, as soon as the nine tasks are done: overall IQ and a profile name, plus GAI and the gap. The one-time sheet is the interpretation of that pattern.
Detailed report · $19.99
What your pattern means
- What your pattern means, in writing
- Scores for the 5 cognitive domains
- Scores for all 9 tasks
- GAI, CPI, and where reasoning sits versus memory and speed
- Saved to your email so you can open it again
The laboratory
What GAIvsIQ publishes
CHC theory is the framework behind tests such as WAIS and WJ. The laboratory uses that map, then keeps GAI and Full Scale IQ apart — the comparison most official reports already print.
3 / 8
Which completes the pattern?
ABCD
1 / 6
Solve, then remember the left number
3 + 4 = ?
6789
1 / 12
Targets
★ △
Row
○ □ ★ ◇
YesNo
1 / 8
Bird is to nest as bee is to ___
A. hiveB. honeyC. flowerD. wing
The same nine tasks as the sample report. Start the free test →
Built on CHC theory
The same theoretical framework behind intelligence tests such as WAIS and WJ. Five broad abilities: verbal knowledge, fluid reasoning, visual processing, working memory, and processing speed.
How scores are made →WAIS-5-generation structure
Five primary indexes, with visuospatial processing split from fluid reasoning. GAI still drops working memory and processing speed. The subtests change by edition.
GAI on the WAIS-IV →9 tasks
Construct-aligned analogs of representative Wechsler tasks, written for a browser. About 30 minutes. You can move forward one task at a time.
Design of the 9 tasks →Official scores, not re-scored
If you already have FSIQ, GAI, CPI, or the primary indexes from a report, paste them. We subtract and read. We do not invent a reliability coefficient or an SEM we have not measured.
Open the GAI vs IQ calculator →This estimate is for personal understanding and cannot be used for medical diagnosis.
Reading notes
Guides for the question you actually have
What a score means, how this test differs from a clinic WAIS, and how to read a profile. The test itself stays on its own URL.
Score meaning
What is a good IQ score?
What “a good IQ score” can mean on a mean of 100 and an SD of 15: average, high average, 120, and 130. Not a diagnosis, and not a rank from this site’s test.
Read the note →Score chartIQ score chart and percentiles
An IQ score chart on a normal curve: mean 100, SD 15. Percentile labels for 70, 85, 100, 115, 120, and 130, plus how not to misuse the chart.
Read the note →Score meaningWhat average IQ means
Average IQ on this site is the band from 90 to 109 on a mean of 100 and an SD of 15. Why that band holds about half the curve, and what it does not decide.
Read the note →The testFree IQ test with instant results
A free online IQ test with results in the browser when the nine tasks are done. No sign-up. What “instant” includes, and what it does not pretend to be.
Read the note →FAQ
Frequently asked questions
The free test, the profile name, and what the laboratory will not claim.
Do I need an account?
No. The nine tasks do not ask you to sign in. Answers stay in this browser. My page is optional: if you later sign in, a finished sitting is saved to that email. If you pay, the checkout email is the key to the detailed sheet.
Can I take the test for free?
Yes. All nine tasks are free, with no sign-up. After you finish, the overall IQ estimate, a profile name, GAI, and the gap are free. The sample shows the full sheet. Your own written reading — domain scores, task scores, GAI, and CPI — is a one-time purchase, saved to the checkout email.
What results can I see for free?
An overall IQ estimate, a profile name from the verbal–visual and reasoning–proficiency axes, General Ability Index (GAI), and GAI − FSIQ. The sample report shows the layout of the written reading, including the five domains.
What does GAIvsIQ measure?
Five CHC / WAIS-5 domains through nine tasks: verbal comprehension, fluid reasoning, visuospatial processing, working memory, and processing speed. From those we estimate FSIQ, GAI, and the gap.
How long does it take?
About 30 minutes across nine tasks. Each task is only a few minutes. You do not need to finish everything in one sitting: you can move forward one task at a time.
Can I take it on a smartphone?
Yes. The test runs in the browser. You do not need to install an app or create an account. Answers stay in this browser.
How accurate are the results?
The calculator uses the two official composites you type in. The nine-task battery is a construct-aligned estimate on a 100/15 scale. It is not age-normed and not a Pearson test. We do not invent a reliability coefficient or a standard error of measurement we have not measured. If a sitting is mostly the same option, or finished faster than the items can be read, we mark it as thin — a check on that run, not a clinical validity scale.
Can I use it for medical diagnosis?
No. This is for personal understanding. It is not a WAIS or WISC, and it cannot diagnose ADHD, a learning disability, or giftedness. Diagnosis belongs with a clinician.
How does GAI compare to IQ?
When people say IQ they usually mean Full Scale IQ (FSIQ). GAI is a published Wechsler ancillary composite: the same general-ability idea, built from reasoning subtests only. It leaves out working memory and processing speed, so it can sit higher or lower than the number on page one.
Is GAI the same as FSIQ?
No. FSIQ uses the full core battery. GAI uses verbal, spatial, and fluid reasoning and drops working memory and processing speed. On WISC-V that is Similarities, Vocabulary, Block Design, Matrix Reasoning, and Figure Weights. When the two efficiency indexes sit far below reasoning, GAI is often higher than FSIQ.
I already have official scores. Do I need the test?
No. Paste Full Scale IQ and GAI from the report into the calculator. If the report also lists CPI or the primary indexes, those have their own instruments. We do not re-score the Wechsler.
Is GAI my actual IQ?
Neither number is more real. FSIQ is the standard summary. GAI is the better summary of reasoning when memory or speed dragged the composite down. A large gap means one number is a poor description, not that one score is fake.
What GAI score is gifted?
Many programs use 130 (about the 98th percentile). Some accept GAI when FSIQ was pulled down by working memory or processing speed. Cutoffs vary — check the program, not this site.
Who do I write to?
Write to hello@gaivsiq.com. That covers the test, the calculator, the sheet, and questions about an order or a receipt.
Further reading: how to read a GAI vs FSIQ gap, the Directory Index listing, and the Viesearch listing.
Ready when you are
Start the free IQ test
About 30 minutes. No sign-up. An overall IQ estimate and a cognitive profile. Not a diagnosis.