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The Stanford-Binet Intelligence Scales is one of the oldest and most respected IQ tests in the world. This comprehensive guide covers the complete history of the Stanford-Binet, the key differences between SB-5 and other major IQ tests (WISC, WAIS, Mensa, and Full Evaluations), and what you need to know about testing locally.
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The Complete History of the Stanford-Binet
The Origins: Binet-Simon Scale (1905)
The story of the Stanford-Binet begins in France with Alfred Binet and Théodore Simon. In 1905, the French Ministry of Education commissioned Binet to develop a test to identify children who would need special assistance in school. The result was the Binet-Simon Scale, which measured memory, attention, comprehension, and judgment.
Stanford-Binet (1916)
Lewis Terman of Stanford University adapted the Binet-Simon Scale for American use in 1916. This version introduced the Intelligence Quotient (IQ) concept, which was calculated as (Mental Age ÷ Chronological Age) × 100. Terman's version became the foundation for modern IQ testing.
Stanford-Binet (1937)
This revision expanded the test to two forms (L and M) and extended the age range to cover ages 2 to adult. It was the first major revision of the SB.
Stanford-Binet (1960)
This version incorporated the best items from Forms L and M into a single Form L-M. It was the first to introduce deviation IQ scores, which are now standard in all modern IQ tests.
Stanford-Binet (1972)
A minor revision with updated norms based on the 1960s population.
Stanford-Binet (1986) – SB-IV
A major revision that introduced a multi-factor structure. It assessed four cognitive areas: Verbal Reasoning, Abstract/Visual Reasoning, Quantitative Reasoning, and Short-Term Memory. It also introduced the concept of Standard Age Score (SAS).
Stanford-Binet (2003) – SB-5
The current version, SB-5, represents the most comprehensive revision to date. It features:
Five factors: Fluid Reasoning, Knowledge, Quantitative Reasoning, Visual-Spatial Processing, and Working Memory
Full scale IQ score
Ten subtests (5 verbal, 5 nonverbal)
Age range: 2 years to 85+ years
Administration time: 45-75 minutes
Stanford-Binet vs Other Tests: What's the Difference?
Feature
Stanford-Binet (SB-5)
WISC-V
WAIS-IV
Mensa Test
Full Evaluation
Age Range
2–85+ years
6–16 years
16–90 years
16+ years
Varies
Primary Use
Gifted identification, clinical assessment, all ages
Highly gifted questions: Some psychologists select SB-5 for very high ability.
Developmental and clinical referrals: When verbal and nonverbal factors are relevant.
Mensa prior evidence: Accepted scores may qualify under current rules.
Important: Test choice should match the referral question and receiving organization.
Estimated Local SB-5 Administrations
No public city count: Providers and schools do not publish one consolidated total.
Private practice: Use varies by examiner specialty.
School use: WCSD selects instruments under district procedures.
Clinical use: Broader evaluations may use other tests.
Do not infer prevalence: Testing volume does not equal giftedness or disability prevalence.
Stanford-Binet vs Other Tests in Local Practice
WISC-V: Common for school-age children.
WAIS: Standard adult choice.
SB-5: Broad age range and verbal/nonverbal factors.
School acceptance: Confirm WCSD or private-school requirements.
Mensa: Verify test version and documentation.
Clinical judgment: Examiner selects the instrument based on age, language, disability and purpose.
All Stanford-Binet Versions at a Glance
Version
Year
Key Features
Subtests
Binet-Simon
1905
Original French test. First modern intelligence test.
30 items
Stanford-Binet
1916
Terman's American adaptation. Introduced IQ concept.
Varies by age
Stanford-Binet
1937
Two forms (L and M). Extended age range.
Varies by age
Stanford-Binet
1960
Form L-M. Introduced deviation IQ scores.
Varies by age
SB-IV
1986
Multi-factor structure. Standard Age Score (SAS).
15 subtests
SB-5
2003
Current standard. 5 factors. Ages 2-85+.
10 subtests (5 verbal, 5 nonverbal)
Frequently Asked Questions
What is the complete history of the Stanford-Binet?
The Stanford-Binet is the oldest continuously used intelligence test, with origins in 1905 France. Key milestones:
Binet-Simon (1905): Developed by Alfred Binet and Théodore Simon to identify children needing special education.
Stanford-Binet (1916): Lewis Terman adapted it for American use and introduced the IQ concept (Mental Age ÷ Chronological Age × 100).
Stanford-Binet (1937): Two forms (L and M) with an extended age range.
Stanford-Binet (1960): Form L-M. Introduced deviation IQ scores (the modern standard).
SB-IV (1986): Multi-factor structure with four cognitive areas.
SB-5 (2003): Current version with five factors (Fluid Reasoning, Knowledge, Quantitative Reasoning, Visual-Spatial Processing, Working Memory) and ages 2-85+.
The Stanford-Binet was the test used by the famous "Termite" study that followed gifted children throughout their lives.
How does Stanford-Binet compare to WISC and WAIS?
All three are excellent IQ tests, but they have different strengths:
Stanford-Binet (SB-5): Broadest age range (2-85+). Best for highly gifted individuals. Less influenced by processing speed. Balanced verbal/nonverbal subtests.
WISC-V: Best for children aged 6-16. Designed for school placement and learning disability identification. Faster administration.
WAIS-IV: Best for adults aged 16-90. Designed for career guidance, neuropsychology, and Mensa. Most widely used adult IQ test.
Choose Stanford-Binet if you need an assessment that works across all ages and is less affected by processing speed or motor issues.
Is Stanford-Binet better for ADHD assessment?
Yes, Stanford-Binet is often preferred for individuals with ADHD or processing speed issues because it is less influenced by speed compared to WISC and WAIS. The SB-5's emphasis on fluid reasoning and knowledge rather than speed makes it more accessible for individuals with attention difficulties. However, like all IQ tests, SB-5 cannot diagnose ADHD on its own – it provides cognitive profile information that helps clinicians understand how ADHD might affect a person's performance.
Can Stanford-Binet be used for Mensa?
Certain professionally administered Stanford-Binet scores may qualify as prior evidence. American Mensa alone determines whether the version, score, percentile, administration, and documentation meet current requirements.
How long does the Stanford-Binet take?
SB-5 takes approximately 45-75 minutes to administer, depending on the individual's age and performance.
Can Stanford-Binet be used for both children and adults?
Yes! This is one of SB-5's biggest advantages. It covers ages 2-85+ with a single test battery, making it ideal for families who want to compare results across generations.
How much does Stanford-Binet testing cost locally?
Typical fees range from $200 to $1,200. Some insurance plans cover testing when medically necessary. We offer sliding-scale options for qualifying individuals.
Can I take the Stanford-Binet online?
Yes, many psychologists offer Stanford-Binet testing via secure telehealth platforms. However, some subtests may require in-person administration for accurate scoring. Contact us for details.
What's the difference between a Full Evaluation and a single IQ test?
A Full Evaluation includes multiple tests (IQ, achievement, personality, behavioral, emotional) and typically takes 2-6 hours. It provides a comprehensive picture of cognitive, academic, emotional, and behavioral functioning. A single IQ test like Stanford-Binet focuses only on cognitive abilities and takes 45-75 minutes. Full Evaluations are best for complex cases, disability diagnosis, or legal documentation.