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Lee, Yong-Won; Kantor, Robert; Mollaun, Pam – 2002
This paper reports the results of generalizability theory (G) analyses done for new writing and speaking tasks for the Test of English as a Foreign Language (TOEFL). For writing, a special focus was placed on evaluating the impact on the reliability of the number of raters (or ratings) per essay (one or two) and the number of tasks (one, two, or…
Descriptors: English (Second Language), Generalizability Theory, Reliability, Scores
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Broer, Markus; Lee, Yong-Won; Rizavi, Saba; Powers, Don – ETS Research Report Series, 2005
Three polytomous DIF detection techniques--the Mantel test, logistic regression, and polySTAND--were used to identify GREĀ® Analytical Writing prompts ("Issue" and "Argument") that are differentially difficult for (a) female test takers; (b) African American, Asian, and Hispanic test takers; and (c) test takers whose strongest…
Descriptors: Culture Fair Tests, Item Response Theory, Test Items, Cues