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Peer reviewedMuenz, Tracy A.; Ouchi, Bryan Y.; Cole, Jason C. – Psychology in the Schools, 1999
Reexamines the reliability and validity of the Peabody Individual Achievement Test-Revised (PIAT-R) and the Wechsler Individual Achievement Test (WIAT) Written Expression scoring systems, applying theory and more appropriate statistical analyses. The WIAT written-expression scoring system was found to have more items that were both reliable and…
Descriptors: Adolescents, Data Analysis, Reliability, Statistical Analysis
