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Download full textEngelhard, George, Jr. – 1980
The Rasch model is described as a latent trait model which meets the five criteria that characterize reasonable and objective measurements of an individual's ability independent of the test items used. The criteria are: (1) calibration of test items must be independent of particular norming groups; (2) measurement of individuals must be…
Descriptors: Achievement Tests, Difficulty Level, Elementary Secondary Education, Equated Scores
Silva, Sharron J. – 1985
Test item selection techniques based on traditional item analysis methods were compared to techniques based on item response theory. The consistency of mastery classifications in criterion referenced reading tests was examined. Pretest and posttest data were available for 945 first and second grade students and for 1796 fourth to sixth grade…
Descriptors: Analysis of Variance, Comparative Testing, Criterion Referenced Tests, Elementary Education
Yen, Wendy M. – 1979
The extent, causes, and importance of context effects on item parameters for one- and three-parameter latent-trait models were examined. Items were taken from the California Achievement Tests Reading Comprehension and Mathematics Concepts and Applications subtests. The reading items were administered to 1,678 fourth-grade students, and the…
Descriptors: Achievement Tests, Context Clues, Educational Testing, Elementary School Mathematics
