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Konold, Timothy R.; Glutting, Joseph J.; McDermott, Paul A. – Journal of Special Education, 1997
This study developed a normative core profile taxonomy of the four scholastic aptitude and corresponding achievement scales of the Woodcock-Johnson Psycho-Educational Battery (Revised). Cluster analysis was used to sort 2,620 students from the standardization sample. Results of internal and external validity analyses provided support for eight…
Descriptors: Ability, Achievement, Achievement Tests, Aptitude Tests