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The categories of IQ vary between IQ test publishers as the category labels for IQ score ranges are specific to each brand of test. The test publishers do not have a uniform practice of labeling IQ score ranges, nor do they have a consistent practice of dividing up IQ score ranges into categories of the same size or with the same boundary ...
At the time of the study, the gap in average performance between the two groups of children was approximately one standard deviation, which is equivalent to about 15 IQ points or 4 grade levels at high school graduation. Thus, the average IQ score of black children in the U.S. was approximately 85, compared to the average score of white ...
The relationship between IQ and academic performance has been shown to extend to one's children. In a study [12] measuring a range of family background characteristics they found that maternal IQ was a stronger predictor of children's test scores than any other family characteristics, including socioeconomic status. Maternal IQ predicted around ...
The report stated that IQ scores measure important skills as they correlate fairly well (0.5) with grades. This implied that the explained variance (given certain linear assumptions) is 25%. "Wherever it has been studied, children with high scores on tests of intelligence tend to learn more of what is taught in school than their lower-scoring ...
The first practical intelligence test was developed between 1905 and 1908 by Alfred Binet in France for school placement of children. Binet warned that results from his test should not be assumed to measure innate intelligence or used to label individuals permanently. [40] In 1916 Binet's test was translated into English and revised by Lewis ...
Larry P. v. Riles is a California court case in which the court held that IQ tests could not be used to place African-American students in special education classes.. Five African-American children had been placed in special classes for the "educable mentally retarded", based on low IQ test scores.
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