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Robust Scale Transformation Methods In Irt True Score Equating Under Common Item Nonequivalent Groups Design
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Book Synopsis Robust Scale Transformation Methods in IRT True Score Equating Under Common-item Nonequivalent Groups Design by : Yong He
Download or read book Robust Scale Transformation Methods in IRT True Score Equating Under Common-item Nonequivalent Groups Design written by Yong He and published by . This book was released on 2013 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Comparison of Parametric and Nonparametric IRT Equating Methods Under the Common-item Nonequivalent Groups Design by : Yuki Nozawa
Download or read book Comparison of Parametric and Nonparametric IRT Equating Methods Under the Common-item Nonequivalent Groups Design written by Yuki Nozawa and published by . This book was released on 2008 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Statistical Models for Test Equating, Scaling, and Linking by : Alina von Davier
Download or read book Statistical Models for Test Equating, Scaling, and Linking written by Alina von Davier and published by Springer Science & Business Media. This book was released on 2010-10-19 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this book is to emphasize the formal statistical features of the practice of equating, linking, and scaling. The book encourages the view and discusses the quality of the equating results from the statistical perspective (new models, robustness, fit, testing hypotheses, statistical monitoring) as opposed to placing the focus on the policy and the implications, which although very important, represent a different side of the equating practice. The book contributes to establishing “equating” as a theoretical field, a view that has not been offered often before. The tradition in the practice of equating has been to present the knowledge and skills needed as a craft, which implies that only with years of experience under the guidance of a knowledgeable practitioner could one acquire the required skills. This book challenges this view by indicating how a good equating framework, a sound understanding of the assumptions that underlie the psychometric models, and the use of statistical tests and statistical process control tools can help the practitioner navigate the difficult decisions in choosing the final equating function. This book provides a valuable reference for several groups: (a) statisticians and psychometricians interested in the theory behind equating methods, in the use of model-based statistical methods for data smoothing, and in the evaluation of the equating results in applied work; (b) practitioners who need to equate tests, including those with these responsibilities in testing companies, state testing agencies, and school districts; and (c) instructors in psychometric, measurement, and psychology programs.
Book Synopsis Equating Using Unidimensional Dichotomous and Polytomous IRT Models for Testlet-based Tests Under Common-item Nonequivalent Groups Design by : Lidong Zhang
Download or read book Equating Using Unidimensional Dichotomous and Polytomous IRT Models for Testlet-based Tests Under Common-item Nonequivalent Groups Design written by Lidong Zhang and published by . This book was released on 2013 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis D-scoring Method of Measurement by : Dimiter Dimitrov
Download or read book D-scoring Method of Measurement written by Dimiter Dimitrov and published by Taylor & Francis. This book was released on 2023-07-18 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: D-scoring Method of Measurement presents a unified framework of classical and latent measurement referred to as D-scoring method of measurement (DSM). Provided are detailed descriptions of DSM procedures and illustrative examples of how to apply the DSM in various scenarios of measurement. The DSM is designed to combine merits of the traditional CTT and IRT for the purpose of transparency, ease of interpretations, computational simplicity of test scoring and scaling, and practical efficiency, particularly in large-scale assessments. Through detailed descriptions of DSM procedures, this book shows how practical applications of such procedures are facilitated by the inclusion of operationalized guidance for their execution using the computer program DELTA for DSM-based scoring, equating, and item analysis of test data. In doing so, the book shows how DSM procedures can be readily translated into computer source codes for other popular software packages such as R. D-scoring Method of Measurement equips researchers and practitioners in the field of educational and psychological measurement with a comprehensive understanding of the DSM as a unified framework of classical and latent scoring, equating, and psychometric analysis.
Book Synopsis Test Equating, Scaling, and Linking by : Michael J. Kolen
Download or read book Test Equating, Scaling, and Linking written by Michael J. Kolen and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: By providing an introduction to test equating which both discusses the most frequently used equating methodologies and covering many of the practical issues involved, this volume expands upon the coverage of the first edition by providing a new chapter on test scaling and a second on test linking.
Book Synopsis A Comparison of IRT Linking Methods Across Different Conditions by : Anthony R. Zara
Download or read book A Comparison of IRT Linking Methods Across Different Conditions written by Anthony R. Zara and published by . This book was released on 1997 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparison of Kernel Equating and IRT True Score Equating Methods by :
Download or read book A Comparison of Kernel Equating and IRT True Score Equating Methods written by and published by . This book was released on 2007 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This two-part study investigates 1) the impact of loglinear model selection in pre-smoothing observed score distributions on the kernel method of test equating and 2) the differences between kernel equating, chained equipercentile equating, and true score methods of concurrent calibration and Stocking and Lord's transformation method. Data were simulated to emulate realistic situations in which test difficulty differed, sample sizes varied, anchor test lengths were of varying lengths, and test lengths ranged from 20 items to 100 items. Difficulty of anchor tests were held constant. Because data were simulated in a single group (SG) format, traditional unsmoothed equipercentile equating was used as a criterion by which all other methods, which use the non-equivalent groups with an anchor test design (NEAT), were compared. Data were simulated using IceDog (ETS, 2007) and analyzed using KE software (ETS, 2007), MULTILOG (Thissen, 2003), IceDog (ETS, 2007), PARSCALE (Muraki & Bock, 2003) and Fortran programming code developed by the author. Results indicate the impact of equating technique chosen on examinees' test scores in a variety of realistic situations, and have further recommendations for further study."--Abstract from author supplied metadata.
Book Synopsis Multidimensional Item Response Theory by : M.D. Reckase
Download or read book Multidimensional Item Response Theory written by M.D. Reckase and published by Springer Science & Business Media. This book was released on 2009-07-07 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: First thorough treatment of multidimensional item response theory Description of methods is supported by numerous practical examples Describes procedures for multidimensional computerized adaptive testing
Book Synopsis Statistical Guidelines: New Developments in Statistical Methods and Psychometric Tools by : Pietro Cipresso
Download or read book Statistical Guidelines: New Developments in Statistical Methods and Psychometric Tools written by Pietro Cipresso and published by Frontiers Media SA. This book was released on 2022-03-25 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Linking and Aligning Scores and Scales by : Neil J. Dorans
Download or read book Linking and Aligning Scores and Scales written by Neil J. Dorans and published by Springer Science & Business Media. This book was released on 2007-10-15 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, experts in statistics and psychometrics describe classes of linkages, the history of score linkings, data collection designs, and methods used to achieve sound score linkages. They describe and critically discuss applications to a variety of domains. They define what linking is, to distinguish among the varieties of linking and to describe different procedure for linking. Furthermore, they convey the complexity and diversity of linking by covering different areas of linking and providing diverse perspectives.
Book Synopsis Effects of Outlier Item Parameters on IRT Characteristic Curve Linking Methods Under the Common-item Nonequivalent Groups Design by : Francisco Andres Jimenez
Download or read book Effects of Outlier Item Parameters on IRT Characteristic Curve Linking Methods Under the Common-item Nonequivalent Groups Design written by Francisco Andres Jimenez and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: The comparability of test scores on alternate forms of a test has become a matter of considerable importance for test developers and users. This study used a Monte Carlo simulation to investigate the effects of common items with outlier b- and aparameter estimates on the Stocking-Lord (Stocking & Lord, 1983) and Haebara (Haebara, 1980) IRT characteristic curve linking methods under the common-item nonequivalent groups design. The simulation conditions examined in this study included different levels of ability distribution, types of outliers, and number of outliers. Results indicated that neither method seemed to be robust to the presence of common items with outlier b-parameter or items with an interaction of outlier b- and a-parameters, although the Haebara method tended to perform better than the Stocking-Lord method when there were outlier common items with extreme a-parameter.
Book Synopsis Applying Test Equating Methods by : Jorge González
Download or read book Applying Test Equating Methods written by Jorge González and published by Springer. This book was released on 2017-03-06 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes how to use test equating methods in practice. The non-commercial software R is used throughout the book to illustrate how to perform different equating methods when scores data are collected under different data collection designs, such as equivalent groups design, single group design, counterbalanced design and non equivalent groups with anchor test design. The R packages equate, kequate and SNSequate, among others, are used to practically illustrate the different methods, while simulated and real data sets illustrate how the methods are conducted with the program R. The book covers traditional equating methods including, mean and linear equating, frequency estimation equating and chain equating, as well as modern equating methods such as kernel equating, local equating and combinations of these. It also offers chapters on observed and true score item response theory equating and discusses recent developments within the equating field. More specifically it covers the issue of including covariates within the equating process, the use of different kernels and ways of selecting bandwidths in kernel equating, and the Bayesian nonparametric estimation of equating functions. It also illustrates how to evaluate equating in practice using simulation and different equating specific measures such as the standard error of equating, percent relative error, different that matters and others.
Book Synopsis A Unified Approach to IRT Scale Linking and Scale Transformations. Research Report. RR-04-09 by : Matthias von Davier
Download or read book A Unified Approach to IRT Scale Linking and Scale Transformations. Research Report. RR-04-09 written by Matthias von Davier and published by . This book was released on 2004 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper examines item response theory (IRT) scale transformations and IRT scale linking methods used in the Non-Equivalent Groups with Anchor Test (NEAT) design to equate two tests, X and Y. It proposes a unifying approach to the commonly used IRT linking methods: mean-mean, mean-var linking, concurrent calibration, Stocking and Lord and Haebara characteristic curves approaches, and fixed-item parameters scale linkage. The main idea is to view any linking procedure as a restriction on the item parameter space. Then a rewriting of the log-likelihood function together with an appropriately implemented maximization procedure of the log-likelihood function under linear (or nonlinear restrictions) will accomplish the linking. The proposed method is general enough to cover both the dichotomous item response models (the one parameter logistic (1PL) model, 2PL, and 3PL) and the polytomous unidimensional IRT models like the generalized partial credit model. (Contains 1 note.).
Book Synopsis Comparison of Bootstrap Standard Errors of Equating Using IRT and Equipercentile Methods with Polytomously-scored Items Under the Common-item Nonequivalent-groups Design by : YoungWoo Cho
Download or read book 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 published by . This book was released on 2007 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physical Activity Assessments for Health-related Research by : Greg Welk
Download or read book Physical Activity Assessments for Health-related Research written by Greg Welk and published by Human Kinetics. This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: And examples -- References -- Construct validity in physical activity research / Matthew T. Mahar and David A. Rowe -- Definitional stage -- Confirmatory stage -- Theory-testing stage -- Summary -- References -- Physical activity data : odd distributions yield strange answers / Jerry R. Thomas and Katherine T. Thomas -- Overview of the general linear model and rank-order procedures -- Determining whether data are normally distributed -- Application of rank-order procedures -- Data distributions and correlation -- Extensions of GLM rank-order statistical procedures -- Summary -- Endnote -- References -- Equating and linking of physical activity questionnaires / Weimo Zhu -- What is scale equating? -- Equating methods -- Practical issues of scale equating -- Remaining challenges and future research directions -- Summary -- References.
Book Synopsis The International Encyclopedia of Education by : Torsten Husén
Download or read book The International Encyclopedia of Education written by Torsten Husén and published by . This book was released on 1994 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: V.1. Abi-Bur v.2. Cam-Cro- v.3. Cub-Edu. v.4. Edu-Gen. v.5. Gen-Ite. v.6. Jam M au. v.7. Mau-Par. v.8. Par-Rec. v.9. Reg. Soc. v.10. Soc-Tea. v.11. Tec-Zim. v. 12. Indexes.
