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Wechsler Preschool and Primary Scale of IntelligenceThe Wechsler Preschool and Primary Scale of Intelligence (WPPSI) is an intelligence test designed for children ages 2 years 6 months to 7 years 3 months developed by David Wechsler in 1967. It is a descendent of the earlier Wechsler Adult Intelligence Scale and the Wechsler Intelligence Scale for Children tests. Additional recommended knowledgeIt has since been revised twice, in 1989 and 2002. The current revision, WPPSI–III, is published by Harcourt Assessment. It provides subtest and composite scores that represent intellectual functioning in verbal and performance cognitive domains, as well as providing a composite score that represents a child’s general intellectual ability (i.e., Full Scale IQ). SubtestsThe WPPSI–III is composed of 14 subtests.
ScoringThe WPPSI–III provides Verbal and Performance IQ scores as well as the Full Scale IQ. In addition, the Processing Speed Quotient (known as the Processing Speed Index on previous Wechsler scales) can be derived for children aged 4:0 - 7:3, and a General Language Composite can be determined for children in both age bands (2:6–3:11 & 4:0–7:3). Children in the 2:6-3:11 age band are administered only five of the subtests: Receptive Vocabulary, Block Design, Information, Object Assembly, and Picture Naming. Quotient and Composite scores have a mean of 100 and a standard deviation of 15. Subtest scaled scores have a mean of 10 and a standard deviation of 3. For Quotient and Composite scores, below 70 is Extremely Low, 70-79 is Borderline, 80-89 is Low Average, 90-109 is Average, 110-119 is High Average, 120 and above is Superior. This is true for all Wechsler Scales. See also |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Wechsler_Preschool_and_Primary_Scale_of_Intelligence". A list of authors is available in Wikipedia. |