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Phillips, S. E.; Anderson, A. E. – 1983
The LOGTRUE program can be used to obtain a scale of equated raw scores for two tests with parameter estimates on a common item response theory scale. The program derives its name from the method of logistic true score equating described by Lord (1980). The method can be applied to two tests with overlapping items administered to different groups…
Descriptors: Computer Programs, Equated Scores, Group Testing, Latent Trait Theory
Download full textGifford, Janice A.; Hambleton, Ronald K. – 1980
Technical considerations associated with item selection and reliability assessment are considered in relation to criterion-referenced tests constructed to provide group information. The purpose is to emphasize test building and the evaluation of test scores in program evaluation studies. It is stressed that an evaluator employ a performance or…
Descriptors: Criterion Referenced Tests, Group Testing, Item Sampling, Models
Dungan, Lucille A. – 1988
This study investigated the "customization" of a standardized achievement test to measure the effect on group and individual scores. "Customization" refers to the modification of an existing test to more closely match test specifications of the entity using the test, usually a state or large school district. Results of an…
Descriptors: Achievement Tests, Difficulty Level, Elementary School Students, Grade 4
