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Stanford-Binet 5 Score Interpretation

By Inderbir Kaur Sandhu, Ph.D


Q: We just recently received our son's Stanford binet 10 test results. He is in the 5th grade. In the following subjects these were his scores. All other subjects were similar in scores. He even had phs for grade equivalent on several. Would he be considered gifted? Thanks!

Reading
Scaled score percentile- Grade equivalent
700 93 10.7

Math
Scaled score percentile- Grade equivalent
676 84 8.8

Language
Scaled score percentile- Grade equivalent
692 92 12.8

A: For the benefit of other readers, a little information about this test. The Stanford-Binet Intelligence Scales, Fifth Edition (SB5) which is a standardized measurement of intelligence provides a comprehensive coverage of five factors of cognitive ability that is; Fluid Reasoning, Knowledge, Quantitative Reasoning, Visual-Spatial Processing, and Working Memory.

There are 10 subtest scores and these scores combine to form four types of composite scores which are; factor index, domain, abbreviated, and full scale. Two subtests (one verbal, the other its nonverbal complement) combine to form each factor index. There are two domain scales; the Nonverbal IQ (NVIQ) (combines the five nonverbal subtests) and the Verbal IQ (VIQ) (combines the five verbal subtests). Two routing subtests combine to form the Abbreviated Battery IQ (ABIQ). And finally, the Full Scale IQ (FSIQ) combines all 10 subtests. Average scores range from the 2-year-old level (about 430) to the adult level (about 520).

The scores that you indicated alone may not be sufficient to determine giftedness; the full scale IQ score would be required for that. As a very rough guide for levels of giftedness based on standardized IQ scores, one can assume the following:

IQ range Level of Giftedness
115-130 High achiever
130-145 Moderately gifted
145-160 Highly gifted
160-180 Exceptionally gifted
Above 180 Profoundly gifted

Having said that, do bear in mind that this is a rough estimate and all IQ scores are set within an error band which can mean that an IQ of 130 could, in reality, be lower at 128 or perhaps higher at 133. For the best interpretation of the scores, you would need to provide the full details of the scores with all the subset scores for a professional to interpret. If this was done in school, you may want to speak to the teacher in charge to find out more about the meaning of the scores or ask to be referred to someone who is familiar with the interpretation of the scores. All the best!


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