# intelligence quotient

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## intelligence quotient

a measure of the intelligence of an individual derived from results obtained from specially designed tests. The quotient is traditionally derived by dividing an individual's mental age by his chronological age and multiplying the result by 100
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

## intelligence quotient (IQ)

a unit used in the field of INTELLIGENCE measurement and testing as an index of an individual's intelligence relative to a comparable population with respect to age. A ratio IQ is the IQ expressed as a ratio of mental age (as measured by a test) to chronological age, and multiplied by 100 to avoid decimals:

The average child at any one chronological age will therefore score 100 on the appropriate set of IQ test items. This was the original IQ measure first used in 1916 in the Stanford-Binet Test.

Modern tests make use of standard scores, which express the individual's distance from the mean in terms of the standard deviation, and assume a normal distribution. In a variant of this, the deviation IQ, the mean is 100 and a standard deviation of 15 or 16 is usual.

It is important to note the difference between these measures, since the deviation IQ is not a ratio of mental age to chronological age, and the measured IQs derived from it will depend on the standard deviation used in the test. see also INTELLIGENCE TEST.

Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000

## intelligence quotient

[in′tel·ə·jəns ‚kwōsh·ənt]
(psychology)
The numerical designation for intelligence expressed as a ratio of an individual's performance on a standardized test to the average performance according to age. Abbreviated IQ.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Table 2 Mean, Standard deviation, t-value, p-value for the scores Emotional intelligence Quotient (N=200)
Effects of Body Mass Index (BMI) on Intelligence Quotient (IQ).
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They also found no evidence that age, ethnicity, gender, intelligence quotient, ADHD subtype and severity, or the mother's education level influenced treatment outcome.
No, it ain't "magic math!" This phenomenon occurs when one dumb crook joins forces with another dumb crook and together, they equal the crime-conspiring intelligence quotient of your average oil-soaked four-by-four.
When the results arrived two weeks later I found that my intelligence quotient on the Cattell B scale was 138, which is in the top 5% in the country, and 121 on the Culture Fair scale, which is in top 10%.