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The McCarthy Scales of Children's Abilities was intended to measure children from ages 2 to 8. The scale is very sound, and if there was more validity data, it could have very well obtained the same status as the Wechsler Intelligence Scale for Children. In fact, the Wechsler scale actually overlaps the McCarthy's age range.
The Differential Ability Scales (DAS) is a nationally normed (in the US), and individually administered battery of cognitive and achievement tests. Into its second edition (DAS-II), the test can be administered to children ages 2 years 6 months to 17 years 11 months across a range of developmental levels.
Matrix Reasoning (primary, FSIQ) – children are shown an array of pictures with one missing square, and select the picture that fits the array from five options. Figure Weights (primary, FSIQ) – children view a stimulus book that pictures shapes on a scale (or scales) with one empty side and select the choice that keeps the scale balanced.
Created Date: 8/30/2012 4:52:52 PM
The reliability coefficients for the WPPSI-III US composite scales range from .89 to .95. The UK sample for the WPPSI-III was collected between 2002–2003 and contained 805 children in an attempt to accurately represent the most current UK population of children aged 2 years 6 months to 7 years 3 months according to the 2001 UK census data.
The second edition (KABC-II) which was published in 2004, is an individually administered measure of the processing and cognitive abilities of children and adolescents aged 3–18. As with the original KABC, the KABC-II is a theory-based instrument. However the KABC-II differs in its conceptual framework and test structure.
[2] IQ in the top 5% is difficult to accurately measure. The GRS is too new to have been adequately normed for acceptable accuracy at those levels. Criteria, such as Leadership and Motivation, are often counter-correlated with high IQ, so the GRS might actually screen out children who most need special attention.
The Bayley Scales of Infant and Toddler Development (version 4 was released September 2019) is a standard series of measurements originally developed by psychologist Nancy Bayley used primarily to assess the development of infants and toddlers, ages 1–42 months. [1]