Glossary
Stanford-Binet Intelligence Scales
Definition
The Stanford-Binet Intelligence Scales are a clinical intelligence test descended from Binet and Simon's 1905 test. Lewis Terman published the Stanford revision in 1916, and the fifth edition, SB5, by Gale Roid, appeared in 2003. Modern editions report deviation IQs with mean 100 and SD 15.
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History in brief
Alfred Binet and Theodore Simon published the first practical intelligence test in 1905, and Lewis Terman published the Stanford revision in 1916 (Wikipedia: Intelligence quotient). The Stanford-Binet Fifth Edition (SB5), by Gale Roid, was published in 2003 (Wikipedia: Stanford-Binet).
Why it matters for IQ scores
The Stanford-Binet is one of the two families of clinical tests most often meant by “an IQ test”. It also explains a common source of confusion: older forms used a standard deviation of 16, not 15 (Wikipedia: IQ classification). The same rank that reads 130 on an SD 15 test reads about 132 on an SD 16 test, and 145 reads about 148.
Common confusions
An old score on the SD 16 scale is not directly comparable with a modern one on SD 15. Convert through the percentile first; the percentile to IQ converter does this for you. See also the WAIS, the Cattell Culture Fair test, a short history of IQ tests and the major IQ tests compared.
The current edition at a glance
The Stanford-Binet Fifth Edition (SB5), by Gale Roid, covers ages 2 to 85 and older and is administered individually, with about 5 minutes for each of its 10 subtests (PRO-ED: SB5). It measures five factors (Fluid Reasoning, Knowledge, Quantitative, Visual-Spatial and Working Memory) in verbal and nonverbal domains, and its composite scores have a mean of 100 and a standard deviation of 15 (PRO-ED: SB5). The full guide: Stanford-Binet 5 (SB5).
Try one · Logical Reasoning
Which tile completes the second pair?
Tap the option you think is right, or show the answer.
Show the answer
The missing panel shows a large outlined triangle pointing up, with small solid shapes: a diamond at the right side (option 4).
How to solve it
- Compare the first two panels and name exactly what changed.
- The main shape and the small shapes swap forms: the main shape takes the form of the small ones, and the small ones take the form of the main shape.
- Nothing else changes.
- Apply the same change to the third panel: a large outlined diamond, with small solid shapes: a triangle at the right side.
- So the missing panel shows a large outlined triangle pointing up, with small solid shapes: a diamond at the right side.
That was 1 puzzle. The full test has 25.
Sources
- Stanford-Binet Intelligence Scales. Wikipedia. en.wikipedia.org/wiki/Stanford%E2%80%93Binet_Intelligence_Scales
- Intelligence quotient. Wikipedia. en.wikipedia.org/wiki/Intelligence_quotient
- IQ classification. Wikipedia. en.wikipedia.org/wiki/IQ_classification
- Roid, G. H. Stanford-Binet Intelligence Scales, Fifth Edition (SB5), PRO-ED product page. 2003. proedinc.com/products-13290.html