Comparison Of Bootstrap Standard Errors Of Equating Using Irt And Equipercentile Methods With Polytomously Scored Items Under The Common Item Nonequivalent Groups Design
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Comparison Of Bootstrap Standard Errors Of Equating Using Irt And Equipercentile Methods With Polytomously Scored Items Under The Common Item Nonequivalent Groups Design
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Author : YoungWoo Cho
language : en
Publisher:
Release Date : 2007
Comparison Of Bootstrap Standard Errors Of Equating Using Irt And Equipercentile Methods With Polytomously Scored Items Under The Common Item Nonequivalent Groups Design written by YoungWoo Cho and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Examinations categories.
A Comparison Of Bootstrap Standard Errors Of Irt Equating Methods For The Common Item Nonequivalent Groups Design
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Author : Tsung-Hsun Tsai
language : en
Publisher:
Release Date : 1998
A Comparison Of Bootstrap Standard Errors Of Irt Equating Methods For The Common Item Nonequivalent Groups Design written by Tsung-Hsun Tsai and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Bootstrap (Statistics) categories.
Standard Errors Of Equipercentile Equating For The Common Item Nonequivalent Populations Design
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Author : David Jarjoura
language : en
Publisher:
Release Date : 1985
Standard Errors Of Equipercentile Equating For The Common Item Nonequivalent Populations Design written by David Jarjoura and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Educational tests and measurements categories.
Equating Using Unidimensional Dichotomous And Polytomous Irt Models For Testlet Based Tests Under Common Item Nonequivalent Groups Design
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Author : Lidong Zhang
language : en
Publisher:
Release Date : 2013
Equating Using Unidimensional Dichotomous And Polytomous Irt Models For Testlet Based Tests Under Common Item Nonequivalent Groups Design written by Lidong Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
The relative equating performance of the Graded Response Model (GRM) and the Generalized Partial Credit (GPC) model was compared with that of the two parameter logistic (2PL) model using simulated testlet data under a common-item nonequivalent groups design. Impacts of various levels of testlet effects, calibration procedures, group differences, number of common items, sample size were investigated. Three traditional linear equating methods were used as criteria for the IRT true score equating and IRT observed score equating results from the three item response theory models. In general, the equating performance based on the two polytomous models yielded results that were more compatible with the results of the traditional equating methods with the presence of testlet effects. Even in some conditions without testlet effects, the equating performance of the two polytomous models was more similar to that of the traditional methods than the dichotomous 2PL model, particularly when the number of common items was larger. Of the two polytomous models, the GRM was found to render results in more agreement with those of traditional linear methods in conditions of separate calibration with linking. The characteristic curve linking methods outperformed the moment methods in a majority of conditions. The separate calibration procedures were better than the concurrent calibration procedure in most of the conditions, especially when the number of common items was small.
Robust Scale Transformation Methods In Irt True Score Equating Under Common Item Nonequivalent Groups Design
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Author : Yong He
language : en
Publisher:
Release Date : 2013
Robust Scale Transformation Methods In Irt True Score Equating Under Common Item Nonequivalent Groups Design written by Yong He and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Electronic Dissertations categories.
Common test items play an important role in equating multiple test forms under the common-item nonequivalent groups design. Inconsistent item parameter estimates among common items can lead to large bias in equated scores for IRT true score equating. Current methods extensively focus on detection and elimination of outlying common items, which usually leads to enlarged random equating error and inadequate content representation of common items. New robust scale transformation methods based on robust regression, the robust Deming regression method, the robust Haebara method, and the least absolute values (LAV) method, were proposed. In simulation studies, performances of the proposed methods were compared to the Stocking-Lord method which yields the least equating errors among the traditional method and to outlier removal methods. The results indicate: 1) the robust Haebara method and the LAV method usually outperform the robust Deming regression method, 2) the robust Haebara method and the LAV method perform as well as the Stocking Lord method under the condition of No outlier, 3) the robust Haebara method and the LAV method perform better than the Stocking-Lord method when a single outlying common item is simulated, 4) the LAV method and the robust Haebara method are better than, or at least comparable to, the existing outlier removal methods in the presence of a single outlying common item, and 5) the LAV method and the robust Haebara method have smaller equated scores than the Stocking-Lord method using the CBASE data of English and Mathematics.
Analytic Smoothing For Equipercentile Equating Under The Common Item Nonequivalent Populations Design
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Author : Michael J. Kolen
language : en
Publisher:
Release Date : 1987
Analytic Smoothing For Equipercentile Equating Under The Common Item Nonequivalent Populations Design written by Michael J. Kolen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Educational tests and measurements categories.
A Comparison Of The Common Item And Random Groups Equating Designs Using Empirical Data
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Author : Dong-In Kim
language : en
Publisher:
Release Date : 2008
A Comparison Of The Common Item And Random Groups Equating Designs Using Empirical Data written by Dong-In Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
We designed this study to evaluate several data collection and equating designs in the context of item response theory (IRT) equating. The random-groups design and the common-item design have been widely used for collecting data for IRT equating. In this study, we investigated four equating methods based upon these two data collection designs, using empirical data from a number of different testing programs. When the randomly equivalent group assumption was reasonably met, the four equating methods tended to produce highly comparable results. On the other hand, equating methods based upon either of the equating designs produced dissimilar results. Sample size can have differential effects on the equating results produced by the different equating methods. In practice, a common-item equivalent-groups design often produces unacceptably large differences in the group mean due to various anomalies such as context effects, poor quality of common items, or a very small number of common items. In such cases, a random-groups design would produce more stable equating results.
Assessing First And Second Order Equity For The Common Itemnonequivalent Groups Design Using Multidimensional Irt
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Author : Benjamin James Andrews
language : en
Publisher:
Release Date : 2011
Assessing First And Second Order Equity For The Common Itemnonequivalent Groups Design Using Multidimensional Irt written by Benjamin James Andrews and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with College entrance achievement tests categories.
Results from the first simulation study showed that estimates of expected scores had lower mean squared error values when the unidimensional framework was used compared to when the multidimensional framework was used when the correlation between abilities was high. The multidimensional IRT framework had lower mean squared error values for conditional standard errors of measurement when the correlation between abilities was less than .95. In the second simulation study, chained equating performed better than frequency estimation for first-order equity. Frequency estimation better preserved second-order equity compared to the chained method. As tests became more multidimensional or as group differences increased, the multidimensional IRT observed score equating method tended to perform better than the other methods.
Standard Errors Of Equipercentile Equating Under The Common Item Nonrandom Groups Design
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Author : David Jarjoura
language : en
Publisher:
Release Date : 1984
Standard Errors Of Equipercentile Equating Under The Common Item Nonrandom Groups Design written by David Jarjoura and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Educational tests and measurements categories.
Comparison Of Parametric And Nonparametric Irt Equating Methods Under The Common Item Nonequivalent Groups Design
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Author : Yuki Nozawa
language : en
Publisher:
Release Date : 2008
Comparison Of Parametric And Nonparametric Irt Equating Methods Under The Common Item Nonequivalent Groups Design written by Yuki Nozawa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Educational tests and measurements categories.