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An intelligence quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. [1] Originally, IQ was a score obtained by dividing a person's mental age score, obtained by administering an intelligence test, by the person's chronological age, both expressed in terms of years and months.
According to Ewen Montagu, John Godfrey devised this system when he was director of the Naval Intelligence Division (N.I.D.) around the time of World War II. [5] The system employed by the United States Armed Forces rates the reliability of the source as well as the information. The source reliability is rated between A (history of complete ...
The Wechsler Adult Intelligence Scale (WAIS) is an Intelligence Quotient (IQ) test designed to measure intelligence and cognitive ability in adults and older adolescents. [1] For children between the ages of 6 and 16, Wechsler Intelligence Scale for Children (WISC) is commonly used.
The first psychometric instruments were designed to measure intelligence. [11] One early approach to measuring intelligence was the test developed in France by Alfred Binet and Theodore Simon . That test was known as the Test Binet-Simon [ fr ] .The French test was adapted for use in the U. S. by Lewis Terman of Stanford University, and named ...
The cover of a test booklet for Raven's Standard Progressive Matrices. Raven's Progressive Matrices (often referred to simply as Raven's Matrices) or RPM is a non-verbal test typically used to measure general human intelligence and abstract reasoning and is regarded as a non-verbal estimate of fluid intelligence. [1]
[31] [32] Not all report test results as "IQ", but most now report a standard score with a mean score level of 100. When a test-taker scores higher or lower than the median score, the score is indicated as 15 standard score points higher or lower for each standard deviation difference higher or lower in the test-taker's performance on the test ...
The Kohs Test continues to be used in research extensively to measure executive functioning and learning, consistent with the original design of the test. [9] [10] This has made the Kohs Block Test useful for assessing the effects of aging, [11] drug use, [12] and in brain research, [13] among other areas. In particular, that the Kohs is a ...
The Reynolds Intellectual Assessment Scales (RIAS) is an individually administered test of intelligence that includes a co-normed, supplemental measure of memory. [1] It is appropriate for individuals ages 3–94. The RIAS intelligence subtests include Verbal Reasoning (verbal), Guess What (verbal), Odd-Item Out (nonverbal), and What's Missing?