ERIC Number: ED080537
Record Type: Non-Journal
Publication Date: 1971-Aug
Reference Count: N/A
Intellectual Development of Children as Measured by the Wechsler Intelligence Scale, United States. Data from the Health Examination Survey, Series 11, Number 107.
This report presents national estimates of the intellectual development levels of noninstitutionalized children 6-11 years of age in the United States. These estimates were determined by scores on the Vocabulary and Block Design subtest of the WISC obtained in the Health Examination Survey of 1963-65. Findings are shown by age, sex, and grade in school in the form of scaled scores, raw scores, and percentile distribution of raw scores for each subtest and as standard scores or deviation IQ estimates of the Full Scale IQ based on this dyad short form of the WISC. Comparisons for the two subtests are made with findings in Wechsler's standardization group. Mean scores on the Block Design subtest were higher in the present study than in Wechsler's at both 7 and a half and 10 and a half years, the difference being statistically significant only for the younger group. On the Vocabulary subtest, the present study means were significantly lower at 7 and a half years but slightly higher at 10 and a half years. Variability in scores was greater in the present study. Boys were found to outscore girls, on the average even more consistently on the two subtests used in the survey than on the entire test in Wechsler's original standardization study. Since the present findings are based on a larger, more representative sample than the original study, it appears that there is a sex differential in performance that cannot be attributed to a factor of bias in sample selection. (Author/KM)
Descriptors: Age Differences, Comparative Analysis, Elementary School Students, Intellectual Development, Intelligence, Intelligence Tests, Raw Scores, Research Reports, Scores, Sex Differences, Statistical Data, Test Results
Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402 ($0.50)
Publication Type: N/A
Education Level: N/A
Authoring Institution: National Center for Health Statistics (DHEW/PHS), Hyattsville, MD.
Identifiers - Assessments and Surveys: Wechsler Intelligence Scale for Children