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Intelligence Test Scores ClassificationBy Inderbir Kaur Sandhu, Ph.D
Q: We just had our son's IQ tested for gifted and we received his IQ scores. What would the "normal" scores be for a 10 year old male in 4th grade for:
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Verbal comprehension
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Preceptual Reasoning
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Working Memory
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Processing Speed
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Reading
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Math Spelling
If you can not answer where can I find these results. Thank you for your time.
A: You did not indicate the test, so from the items I believe it may have been the Wechsler test (WISC). I am not able to tell the normal scores as this is a rather complex test and interpretation is subjected to many different responses and normal distribution which is indicated in the scoring manual. Therefore, the scores are best interpreted by a qualified tester and interpreter of such tests who have access to the detailed results. However, I am able to provide you with a guide to the percentile ranks and classification ratings of the Wechsler Tests as indicated in the following table:
A GUIDE TO PERCENTILE RANKS & CLASSIFICATION RATINGS
(Wechsler Tests)
| IQ |
Percentile Range |
Classification |
| 130 and above |
98 to 99.99 |
Very Superior |
| 120 to 129 |
91 to 97 |
Superior |
| 110 to 119 |
75 to 90 |
High Average |
| 90 to 109 |
25 to 73 |
Average |
| 80 to 89 |
9 to 23 |
Low Average |
| 70 to 79 |
2 to 8 |
Borderline |
| 69 and below |
.01 to 2 |
Intellectual Deficient |
Please use this as a rough guide as the final scores are subject to interpretation of an educational psychologist or an expert in testing. You may go back to the school and ask if there is possibility for arranging someone to interpret the scores, or ask where you may get a detailed interpretation.
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