CHC theory · WAIS-5-generation structure · 9 tasks
An online IQ test that measures IQ and the pattern
An online IQ test you can take at home.
Your overall IQ and brain type report are available for free.
Overall IQ (FSIQ)
109±3.9
Words · reflection
A cognitive profile with strong verbal comprehension
You can take all 9 tasks and view your overall IQ, brain type report, domain scores, task scores, and detailed indicators such as GAI/CPI for free.
- 9 tasks · about 30 minutes
- Smartphone-friendly · resume by task
- Measurement design based on the CHC model
What you can view for free
You can take all 9 tasks and view your overall IQ, brain type report, domain scores, task scores, and detailed indicators such as GAI/CPI for free.
Free
- All 9 tasks
- Overall IQ
- Brain type report
Detailed report
Free
- Scores for the 5 cognitive domains
- Scores for all 9 tasks
- Detailed indicators including GAI / CPI
What is BrainTypeIQ?
CHC theory provides the theoretical framework behind intelligence tests such as WAIS and WJ. BrainTypeIQ is an online IQ test designed around that same framework.
Built on CHC theory
BrainTypeIQ uses the same theoretical framework as WAIS and WJ. Scores are calculated through age-adjusted statistical analysis of more than 1,000 collected responses after invalid and duplicate responses are excluded.
Understand the CHC model →WAIS-5-generation structure
WAIS-5 was released in the United States in 2024, while its introduction in Japan is still several years away. BrainTypeIQ adopts the latest five-domain structure, separating visuospatial processing from fluid reasoning, which were combined into one index in WAIS-IV.
About WAIS-IV and WAIS-5 →9 tasks
Based on representative tasks used in WAIS and WJ, BrainTypeIQ measures five domains through nine tasks adapted for online administration.
Design of the 9 tasks →※ This test is intended for personal understanding and cannot be used for medical diagnosis.
You can take all 9 tasks and view your overall IQ, brain type report, domain scores, task scores, and detailed indicators such as GAI/CPI for free.
Frequently Asked Questions
Can I take the test for free?
You can take all 9 tasks and view your overall IQ, brain type report, domain scores, task scores, and detailed indicators such as GAI/CPI for free.
What results can I see for free?
You can take all 9 tasks and view your overall IQ, brain type report, domain scores, task scores, and detailed indicators such as GAI/CPI for free.
What does BrainTypeIQ measure?
BrainTypeIQ measures 5 cognitive domains through 9 tasks.
Verbal comprehension, fluid reasoning, visuospatial processing, working memory, and processing speed.
Beyond overall IQ, it shows where your strengths lie and which areas tend to place a greater load on you, as well as the pattern of differences across your cognitive profile.
Design of the 9 tasks →How long does it take?
The full test takes about 30 minutes across 9 tasks.
Each task takes 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. BrainTypeIQ is designed to be taken on a smartphone.
The test runs directly in the browser. You do not need to install an app.
How should I read the reliability of the results?
Scores are calculated from over 1,000 collected responses, after excluding invalid or duplicate responses, using statistical analysis that takes age into account.
See the measurement design →Can I use it for medical diagnosis?
BrainTypeIQ cannot be used for medical diagnosis.
Diagnosis must be made by a specialist at a medical institution.
However, understanding your cognitive strengths and weaknesses can provide useful information when you consult a professional.
What the test can and cannot do →You can take all 9 tasks and view your overall IQ, brain type report, domain scores, task scores, and detailed indicators such as GAI/CPI for free.