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Peer reviewedWerts, C. E.; And Others – Educational and Psychological Measurement, 1980
Test-retest correlations can lead to biased reliability estimates when there is instability of true scores and/or when measurement errors are correlated. Using three administrations of the Test of Standard Written English and essay ratings, an analysis is demonstrated which separates true score instability and correlated errors. (Author/BW)
Descriptors: College Freshmen, Error of Measurement, Essay Tests, Higher Education
