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Download full textKim, Sooyeon; Lu, Ru – ETS Research Report Series, 2018
The purpose of this study was to evaluate the effectiveness of linking test scores by using test takers' background data to form pseudo-equivalent groups (PEG) of test takers. Using 4 operational test forms that each included 100 items and were taken by more than 30,000 test takers, we created 2 half-length research forms that had either 20…
Descriptors: Test Items, Item Banks, Difficulty Level, Comparative Analysis
Kim, Sooyeon; Moses, Tim – ETS Research Report Series, 2014
The purpose of this study was to investigate the potential impact of misrouting under a 2-stage multistage test (MST) design, which includes 1 routing and 3 second-stage modules. Simulations were used to create a situation in which a large group of examinees took each of the 3 possible MST paths (high, middle, and low). We compared differences in…
Descriptors: Comparative Analysis, Difficulty Level, Scores, Test Wiseness
