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IQ Gains and the Binet Decrements
James R. Flynn
Journal of Educational Measurement
Vol. 21, No. 3 (Autumn, 1984), pp. 283-290
Published by: National Council on Measurement in Education
Stable URL: http://www.jstor.org/stable/1434785
Page Count: 8
You can always find the topics here!Topics: Wechsler scales, Intelligence quotient, Standardization, Stanford Binet test, Preschool children, Children, Simulations, Point estimators, Sampling errors, Age groups
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Thorndike compiled Stanford-Binet data which made it appear that children aged 6 and under have made greater IQ gains than older children and that this pattern dominated the whole period from 1932 to 1971-72. Therefore, he sought causal factors likely to affect preschoolers more than others, for example, TV in general and educational TV in particular. A wide array of data show that the atypical gains of young children are either an artifact of sampling error or totally antedate 1947, ruling out TV as an age-specific factor. This data also suggest that Americans have gained about 12 IQ points from 1932 to 1972 with verbal gains being a point lower and performance gains a point higher.
Journal of Educational Measurement © 1984 National Council on Measurement in Education