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Peer reviewed Peer reviewed
Arinoldo, Carlo G. – Perceptual and Motor Skills, 1982
Data on the concurrent validity of the McCarthy Scales, using two Wechsler Scales for Children as criteria, were compared with those of previous studies. Significant moderate to strong correlations at preschool and school-age levels between the General Cognitive Index of the McCarthy and Wechsler IQ's were noted. (Author/RD)
Descriptors: Age Differences, Correlation, Early Childhood Education, Intellectual Development
Peer reviewed Peer reviewed
Flynn, James R. – Journal of Educational Measurement, 1984
Thorndike's Stanford-Binet data suggest that from 1932 to 1971-72 preschool children enjoyed greater IQ gains than older children, possibly due to the rise of television. Additional analysis indicated that gains were either due to sampling error or totally antedated 1947. Gains of 12 IQ points were found for Americans. (Author/EGS)
Descriptors: Achievement Gains, Age Differences, Intelligence Differences, Intelligence Quotient
Smith, Douglas K.; And Others – 1992
The stability of the Kaufman Assessment Battery for Children (K-ABC) was studied by examining its performance over a 5-year interval with 16 non-handicapped children aged 45 to 61 months at the beginning of the study. Global scale stability coefficients (corrected for restriction in range) for Time 1 testing (age 4 years) and Time 4 testing (age 9…
Descriptors: Age Differences, Age Groups, Analysis of Variance, Child Development