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Direct linkChon, Kyong Hee; Lee, Won-Chan; Ansley, Timothy N. – Applied Measurement in Education, 2013
Empirical information regarding performance of model-fit procedures has been a persistent need in measurement practice. Statistical procedures for evaluating item fit were applied to real test examples that consist of both dichotomously and polytomously scored items. The item fit statistics used in this study included the PARSCALE's G[squared],…
Descriptors: Test Format, Test Items, Item Analysis, Goodness of Fit
Liu, Yuming; Schulz, E. Matthew; Yu, Lei – Journal of Educational and Behavioral Statistics, 2008
A Markov chain Monte Carlo (MCMC) method and a bootstrap method were compared in the estimation of standard errors of item response theory (IRT) true score equating. Three test form relationships were examined: parallel, tau-equivalent, and congeneric. Data were simulated based on Reading Comprehension and Vocabulary tests of the Iowa Tests of…
Descriptors: Reading Comprehension, Test Format, Markov Processes, Educational Testing
Peer reviewedFeldt, Leonard S. – Applied Measurement in Education, 2002
Considers the degree of bias in testlet-based alpha (internal consistency reliability) through hypothetical examples and real test data from four tests of the Iowa Tests of Basic Skills. Presents a simple formula for computing a testlet-based congeneric coefficient. (SLD)
Descriptors: Estimation (Mathematics), Reliability, Statistical Bias, Test Format
Download full textMcMorris, Robert F.; And Others – 1983
Two 50-item multiple-choice forms of a grammar test were developed differing only in humor being included in 20 items of one form. One hundred twenty-six (126) eighth graders received the test plus alternate forms of a questionnaire. Humor inclusion did not affect grammar scores on matched humorous/nonhumorous items nor on common post-treatment…
Descriptors: Grade 8, Grammar, Humor, Junior High Schools
White, Karl R.; Carcelli, Larry – 1982
The effect on children's test scores of different item formats used in standardized mathematics achievement tests was investigated. In a Utah school, 40 second grade students completed a mathematics computation test using eight different formats derived from five standardized achievement tests. Identical content, taken from the most frequently…
Descriptors: Achievement Tests, Comparative Analysis, Computation, Elementary School Mathematics
Easton, John Q.; Correa, Macarena; Luppescu, Stuart; Park, Hye-Sook; Ponisciak, Stephen; Rosenkranz, Todd; Sporte, Susan – 2003
For several decades, the Iowa Tests of Basic Skills (ITBS) held the preeminent role in measuring student and school performance in the Chicago Public Schools (CPS), Illinois. In the context of the No Child Left Behind act and new calls for accountability, the CPS has decided to include results from the Illinois Standard Achievement Test (ISAT) in…
Descriptors: Achievement Tests, Comparative Analysis, Elementary Secondary Education, Mathematics Tests
Perlman, Carole; And Others – 1996
Eighty-five fourth- and eighth-grade learning disabled students whose individualized education plans specified untimed achievement testing were tested with the Reading Comprehension subtest of the Iowa Tests of Basic Skills, either according to the publisher's 40-minute time limit or with an extended time limit of 2 hours, 30 minutes. Results were…
Descriptors: Achievement Tests, Elementary Education, Elementary School Students, Grade 4
