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The results were published in School Readiness: Behavior Tests used at the Gesell Institute. In 2011, the instrument was revised and data was collected only on ages 3–6 years. Today, it is one of the oldest and most established intelligence measures of young children.
A two-tailed test applied to the normal distribution. A one-tailed test, showing the p-value as the size of one tail. In statistical significance testing, a one-tailed test and a two-tailed test are alternative ways of computing the statistical significance of a parameter inferred from a data set, in terms of a test statistic. A two-tailed test ...
The Wechsler Preschool and Primary Scale of Intelligence (WPPSI) is an intelligence test designed for children ages 2 years 6 months to 7 years 7 months developed by David Wechsler in 1967. It is a descendant of the earlier Wechsler Adult Intelligence Scale and the Wechsler Intelligence Scale for Children tests. Since its original publication ...
The z-test for comparing two proportions is a statistical method used to evaluate whether the proportion of a certain characteristic differs significantly between two independent samples. This test leverages the property that the sample proportions (which is the average of observations coming from a Bernoulli distribution ) are asymptotically ...
It was validated both at the hospital and the community level against the standard Denver Developmental Screening Test. [2]With a sensitivity of 66.7% and specificity of 78.8%, it can be used even by community level health worker for mass screening and takes around 5 minutes to complete. [2]
The sign test is a statistical test for consistent differences between pairs of observations, such as the weight of subjects before and after treatment. Given pairs of observations (such as weight pre- and post-treatment) for each subject, the sign test determines if one member of the pair (such as pre-treatment) tends to be greater than (or less than) the other member of the pair (such as ...
One study evaluated the Denver II in terms of how its results matched those of a psychologist in five child-care centers: two serving the children of college-educated white parents and three serving low-income African-American children. The psychologist evaluated 104 children, of whom 18 were judged to be delayed [14]). The Denver II yielded a ...
The KABC-II was standardised between 2001 and 2003 on 3,025 3- to 18-year-olds in 39 states and the District of Columbia. The KABC-II is co normed with the KTEA-II (Kaufman & Kaufman, 2004b). Correlation studies have been completed with: KABC, WISC , WISC-III, WPPSI -III, KAIT , WJ-III COG, PIAT -R, WJ-III ACH and WIAT -II.