Common Instruments That Measure Intelligence (page 2)

By — John Wiley & Sons, Inc.
Updated on Jan 1, 2011

Other Intellectual Assessment Instruments

Although we have focused primarily on the Wechsler Scales, there are several other instruments that also measure intelligence. The following is a list of the most common alternative assessment measures that are used.

Stanford-Binet Intelligence Scales, Fifth Edition (SB5: 2003)   The SB5 is also commonly used to assess intelligence in children but, unlike the Wechsler Scales, the SB5 uses a single instrument for all age levels (2 years, 0 months to adults age 80 years and over). In addition to the Full Scale IQ, the SB5 provides standard scores for Verbal and Nonverbal IQ, based on composite scores obtained for five verbal and five nonverbal scales. The five scales on the SB5 include Fluid Reasoning (problem solving in novel situations), Knowledge (acquired information), Quantitative Reasoning (reasoning with numbers), Visual/Spatial Processing (spatial analysis), and Working Memory (mental manipulation).

The Differential Ability Scale—Second Edition (DAS-2: 2007)   The DAS-2 provides a General Conceptual Ability Score (GCA) for very young children (2 years, 6 months to 3 years, 5 months), and two additional cluster scores for children between 3 years, 6 months and 5 years, 11 months: Verbal Ability and Nonverbal Ability. One other additional cluster, Spatial Ability, is added for children over 6 years of age, resulting in three clusters in addition to the GCA. One benefit of using the DAS-2 is the Special Nonverbal Composite score, which can be substituted for Verbal Ability, if the examiner believes that administration of the verbal tasks is not appropriate (for example, language problems, speech or hearing impairment).

Other Measures of Intelligence and Cognitive Ability There are several other measures of intelligence, including: Reynolds Intellectual Assessment Scales (RIAS), Universal Nonverbal Intelligence Test (UNIT), Wechsler Nonverbal Scale of Ability (WNV), Kaufman Assessment Battery for Children, Second Edition (KABC-II), Cognitive Assessment System (CAS), and the Woodcock-Johnson III Tests of Cognitive Abilities (WJ III). The WJ III will be discussed further in Chapter Eight, when we discuss the use of this instrument to probe potential information-processing difficulties.

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