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In this study 590 third-grade students took one of four reading comprehension tests with either multiple- choice items or open-ended items. Each also took 32 tests indicating 16 semantic Structure-of-Intellect (si) abilities. Four conditions or groups were distinguished on the basis of the...
This study examined the application of the MML-EM algorithm to the parameter estimation problems of the normal ogive and logistic polytomous response models for Likert-type items. A rating-scale model was devel oped based on Samejima's (1969) graded response model. The graded response model...
Factor-analytic techniques and multidimensional scaling models are the traditional ways of representing the interrelations among tests and items. Both can be classified as geometric approaches. This study at tempted to broaden the scope of models traditionally used, and to apply an additive tree...
Simulation studies examined the effect of misspeci fication of the latent ability (θ) distribution on the ac curacy and efficiency of marginal maximum likelihood (MML) item parameter estimates and on MML statistics to test sufficiency and conditional independence. Re sults were compared to the...
The Multidimensional Personality Questionnaire (MPQ; Tellegen, 1982) was parameterized using the two-parameter logistic item response model. This en tailed assessment of the suitability of personality data for item response analyses, including the assessment of dimensionality, monotonicity of...
The standard error of correlations that have been adjusted for selection with commonly used formulas developed by Pearson (1903) was investigated. The major purposes of the study were (1) to provide large- sample approximations of the standard error of a cor relation adjusted using the...
The effectiveness of a Bayesian approach to the es timation problem in item response models has been sufficiently documented in recent years. Although re search has indicated that Bayesian estimates, in gen eral, are more accurate than joint maximum likelihood (JML) estimates, the effect of...
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