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McGaw, Barry; Joreskog, Karl G. – 1970
This study attempts to determine whether the pattern of human abilities varies or remains constant over a range of ability levels. Scores on 12 aptitude and achievement tests for 11,743 subjects, subdivided into four groups according to intelligence and socioeconomic status, were used. A technique, developed by Joreskog, for simultaneously factor…
Descriptors: Ability Identification, Achievement Tests, Analysis of Covariance, Analysis of Variance