Assessment scope and limitations
What this assessment is, and what it is not.
Stanford-Binet Online is an independent online assessment based on the Stanford-Binet scale. It is offered by Inside Brain LLC for personal insight.
The assessment on this site is built on the five-factor model that defines the modern Stanford-Binet (the Fifth Edition, or SB5, published in 2003). Its items are written in the tradition that began with Alfred Binet's 1905 scale and was developed by Lewis Terman at Stanford in 1916. The score conventions — mean of 100, standard deviation of 15, range of 40 to 160 — are the conventions the published research literature uses today.
It is not the clinical instrument itself, it is not administered by a clinician, and it is not affiliated with Stanford University or the publisher of the clinical scales. The methodology summary is on our assessment framework page, and the accuracy discussion is on our accuracy page.
Why people choose the Stanford-Binet Online
- You want a self-understanding score for personal use — a credible, factor-by-factor read on how you think.
- You are curious about your factor profile — where you reason fluidly versus where you are knowledge-bound.
- You want a benchmark you can re-test against in a year or two to track change. (Binet himself argued, against the conventional wisdom of his time, that intelligence develops; he was right.)
- You want a five-factor breakdown, a percentile and a classification for personal insight, without the cost or wait of a formal appointment.
What you get from us
- A complete result in 35–45 minutes — no appointments, no waiting list.
- A factor-by-factor report you keep, can re-read, and can come back to.
- An accessible price for a serious assessment.
- A test that takes Alfred Binet's own warning seriously: a number is the beginning of an answer, not a verdict.
"We must protest and react against this brutal pessimism; we will try to demonstrate that it is founded on nothing."— Alfred Binet, Modern Ideas About Children, 1909
Frequently asked questions
What is the Stanford-Binet Intelligence Test?
It is a research-based framework used to measure human intelligence through reasoning, memory, and problem-solving tasks. Stanford-Binet Online is an independent online assessment based on the Stanford-Binet scale, built on the same five-factor structure (Innate Intelligence, Knowledge, logical-mathemtical intelligence, Visual-Spatial Processing, Working Memory) used by the modern Stanford-Binet.
How is this different from the original Stanford-Binet test?
It follows the same five-factor structure and scoring conventions (mean 100, SD 15, range 40–160) used in the modern Stanford–Binet Intelligence Scales, delivered in a self-administered online format for self-understanding and educational insight. It is not a clinician-administered evaluation.
Is the test accredited or approved by universities?
No. Stanford-Binet Online is independently developed and offered by Inside Brain LLC. It is not affiliated with, endorsed by or accredited by Stanford University or the publisher of the clinical Stanford-Binet scales.
How accurate are the online results?
Results come from a self-administered online assessment and are an estimate for personal insight. They are not equivalent to a clinician-administered evaluation. See our accuracy page for what the score can and cannot tell you.
Who can take the test?
The online assessment is available for ages 5 and above. The children, teens and adults pages describe audiences, not different eligibility rules.
How long does it take?
Most participants finish within 35 to 45 minutes, depending on pace and difficulty progression.
What kind of report will I receive?
An IQ-equivalent Full-Scale score, a percentile and classification, and your factor profile across the five Stanford-Binet factors (Innate Intelligence, Knowledge, logical-mathemtical intelligence, Visual-Spatial Processing, Working Memory). The factor profile is the most useful part.
Is my data private and secure?
Yes. All testing activity is encrypted in transit and stored compliant with international data-protection standards. Aggregate results may be analysed anonymously for research; individual results are never shared.
Ready to take it?
Stanford-Binet Online — an independent online assessment based on the Stanford-Binet scale
View plans and pricing$69 for 1 assessment. Family Pack: 3 assessments for $177. School Pack: 10 assessments for $490.Not an official clinical Stanford-Binet administration or a substitute for a professional evaluation.
Or read about the founder of intelligence testing in our biography of Alfred Binet, or learn about all five factors of the Stanford-Binet.
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