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ERIC Number: ED034265
Record Type: Non-Journal
Publication Date: 1969-Aug
Pages: 14
Abstractor: N/A
Reference Count: N/A
Differential Validity in the ACT Tests.
Cole, Nancy S.
The differential validity of subject area tests of academic ability is investigated. Principal components analyses of test scores, high school grades, and college grades in English math, social studies, and natural sciences show a dominant general ability dimension and a consistent configuration of subject areas on second and third dimensions. Data from approximately 250 colleges yield correlations of subject area college grades with subject area test scores on the American College Tests (ACT) and high school grades. A criterion of differential validity is proposed and calculated for the ACT tests and high school grades in predicting college grades. The moderate differential validity found is interpreted in terms of the first analysis. The modest differential validity in the ACT tests and minute amount in high school grades indicate that neither general tests of academic ability nor grades are ideally suited for efficient classification of students into one of several subject area curricula. (Author/KJ)
Photocopies and 35 m.m. microfilm are available from National Auxiliary Publications Service of the American Society for Information Sciences, 22 W. 34th St., New York, New York 10001. Printed copies from American College Testing Program, Research & Development, Iowa City, Iowa (No price given)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: American Coll. Testing Program, Iowa City, IA. Research and Development Div.
Identifiers - Assessments and Surveys: ACT Assessment