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Hitchcock, Dale C.; Pinder, Glenn B. – 1974
National estimates of school achievement as measured by the reading and arithmetic subtests of the Wide Range Achievement Test (WRAT) for the noninstitutionalized population of the United States aged 12-17 years are presented. Data were obtained in the Health Examination Survey (HES) of 1966-70. In the survey a probability sample of 7,514 youths…
Descriptors: Academic Achievement, Achievement Tests, Adolescents, Age Differences
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Guidubaldi, John; And Others – School Psychology Review, 1983
A wide array of data was gathered in a nationwide study, including parent and child interviews, intelligence test and achievement test scores, and teacher ratings of children's classroom performance. Results indicated extensive differences favoring intact family children, which persisted when IQ and socioeconomic status measures were controlled.…
Descriptors: Academic Achievement, Age Differences, Divorce, Elementary Education