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)

Six university English departments collaborated in this examination of the differences between multiple-choice and essay tests in evaluating writing skills. The study also investigated ways the two tools can complement one another, ways to improve cost effectiveness of essay testing, and ways to integrate assessment and the educational process.…

Over 2,000 writing samples were collected from four undergraduate institutions and compared, where possible, with scores on a multiple-choice test. High correlations between ratings of the writing samples and multiple-choice test scores were obtained. Samples contributed substantially to the prediction of both college grades and writing…