Answers to common questions about BrainTypeIQ.
BrainTypeIQ measures 5 cognitive domains through 9 tasks.
In addition to overall IQ (FSIQ), the results include an analysis of differences across domains, a GAI/CPI analysis, and a brain type report.
Design of the 9 tasks →The full test takes about 30 minutes.
Each task takes only a few minutes. You do not need to finish everything in one sitting: you can move forward task by task.
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.
Yes, we recommend taking the test on a smartphone. Every task is optimized for smartphones and answered by touch. You can also take the test on a computer, but mouse and touch create different conditions for some tasks, such as processing speed tasks. We therefore recommend a smartphone for more accurate results.
You do not need to finish the whole test in one sitting.
You can move forward task by task and resume most tasks later.
Some very short timed tasks may be treated as completed if they are interrupted after starting.
You can retake the test at any time. Retaking it soon may raise your score because of familiarity with or memory of the questions. Use your first result as the reference. We recommend waiting at least one month before retaking.
BrainTypeIQ cannot be used for medical diagnosis.
Developmental conditions and giftedness must be diagnosed through a comprehensive assessment 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 →IQ indicates a relative position among people who took the same test format.
The average is 100, and about 68% of people score between 85 and 115.
It is not a simple ranking of personal worth, but a number that can help you understand cognitive tendencies.
Understand FSIQ →BrainTypeIQ measures the following 5 cognitive domains.
The combination of strengths and more effortful areas varies from person to person. BrainTypeIQ reads that pattern as a cognitive profile.
The CHC model and the 5 domains →GAI and CPI divide IQ into two axes.
For example, someone who is good at careful thought but struggles in speed-based situations will have GAI > CPI. The relationship between these axes reveals features of your cognitive style.
GAI and CPI →BrainTypeIQ is based on the CHC model (Cattell-Horn-Carroll).
This framework is widely used in contemporary intelligence research. Intelligence tests such as WAIS and WJ are also based on the same theory.
BrainTypeIQ measures 5 cognitive domains through 9 tasks within this framework.
Understand the CHC model →The raw scores from the 9 tasks are converted to a common scale using first-completion data from 841 participants in the Japanese version and age information. From these, scores for the 5 domains, GAI, CPI, and overall IQ are calculated.
In the same analysis of 841 participants, the model-based composite reliability of FSIQ was .929. The standard error of measurement (SEM) was about 4.0 points.
Score calculation method →It is BrainTypeIQ's own classification system, combining GAI/CPI dominance with verbal/nonverbal dominance.
A combination of 9 types × 3 subtypes expresses your cognitive characteristics intuitively. Use it as a starting point for understanding, “This is how I tend to use my brain.”
Understand brain types →WAIS is a clinical test administered face to face by a psychologist in a medical setting and is also used for medical diagnosis. BrainTypeIQ is an online test for self-understanding. They share the same theoretical framework (CHC theory) and measure the same five cognitive domains, but their purposes differ.
Difference from WAIS →The results become difficult to interpret correctly.
BrainTypeIQ does not measure whether you already know the correct answer, but how and how quickly you process problems. Take the test without search, notes, or outside help.
Response patterns and reaction times are recorded, and statistically unusual data may reduce score reliability.
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.
BrainTypeIQ stores response accuracy, response times, session information, and your login email address. This information is used to calculate scores, restore sessions, and improve test quality.
Privacy Policy →Your overall IQ, brain type report, scores for all 5 cognitive domains and 9 tasks, and detailed indicators such as GAI/CPI are available for free.