Q:

How does the IQ rating scale work?

A:

Quick Answer

The most commonly used IQ rating scale as of 2014, the Stanford-Binet scale, classifies intelligence as ranging from feeble-mindedness to genius. The Wechsler scale and Cattell's scale are two other scales that are useful for quantifying intelligence, although there is some disparity among these scales.

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How does the IQ rating scale work?
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Full Answer

According to the Stanford-Binet scale, a score of less than 70 indicates feeble-mindedness, a score of 70 to 79 indicates a borderline deficiency in intelligence, a score of 80 to 89 indicates dullness and a score of 90 to 109 indicates average or normal intelligence. A score of 100 is the average score. A score of 110 to 119 signifies superior intelligence, a score of 120 to 140 indicates very superior intelligence, and a score greater than 140 indicates genius or almost genius intelligence.

The Wechsler scale classifies a score of under 70 as extremely low, a score of 70 to 79 as borderline, a score of 80 to 89 as low average, a score of 90 to 109 as average, a score of 110 to 119 as high average, a score of 120 to 129 as superior and a score greater than 130 as very superior. Cattell's scale classifies a score of 90 to 99 as below average, a score of 100 to 119 as average, a score of 120 to 139 as above average, a score of 140 to 159 as highly intelligent and a score greater than 160 as genius level.

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Related Questions

  • Q:

    What is a good IQ score?

    A:

    An intelligence quotient score over 140 is considered to signify a high level of intelligence. An IQ score over 160 is considered to be a genius-level intellect. The average IQ score is 100.

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  • Q:

    What is the IQ scale?

    A:

    IQ scores range from one to over 200 with the average score being 100, as of 2014. Sixty-eight percent of all IQ scores are within one standard deviation of the average. This means that most people have an IQ score between 85 and 115.

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  • Q:

    How does a military GCT score compare to an IQ score?

    A:

    An intelligence quotient, or IQ, test measures the ability to learn. The Army General Classification Test, or GCT, was primarily designed to assess recruits for military jobs. Both tests use a numerical score as their final outcome and are convertible to percentile rankings for a comparison.

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  • Q:

    What is a good IQ?

    A:

    According to the Stanford Revision of the Binet-Simon Scale of Intelligence, the average IQ score is between 90 and 109, so an IQ of 110 or higher signifies above-average intelligence. Genius level IQ begins between scores of 140 to 145.

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