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A Comparison of Kernel Equating and IRT True Score Equating Methods

2007 Educational tests and measurements
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Release : 2007
Genre : Educational tests and measurements
Kind : eBook
Book Rating : /5 ( reviews)

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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 . This book was released on 2007. 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.

A Comparison of Kernel Equating and Item Response Theory True Score Equating

2009 Educational tests and measurements
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Release : 2009
Genre : Educational tests and measurements
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Book Synopsis A Comparison of Kernel Equating and Item Response Theory True Score Equating by : Min Huang

Download or read book A Comparison of Kernel Equating and Item Response Theory True Score Equating written by Min Huang. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt: This study compares the accuracy of NEAT-design IRT true score equating (TIRT) and kernel equating (KE) in different conditions. The relative accuracy of three methods (Stocking-Lord transformation based TIRT (SL TIRT), kernel chain equipercentile equating (KE CE) and kernel post-stratification equating (KE PSE)) are examined in specific and general conditions. Simulated data are used for the analysis. 60 different specific conditions are generated and the relative performances of the methods in each condition are compared using ANOVA. Then the error of each equating line is summarized with RMSD. 180 RMSD values in 60 conditions are categorized into 20 general conditions. RMSD values in each level of the general condition are compared with RMSD. All findings have led to the conclusion that KE CE is the superior equating method for all general and specific conditions. Compared to KE PSE and SL TIRT, it produces more accurate and stable results. Closer examination shows how KE CE is consistently less affected by various adverse conditions, how SL TIRT is more affected, and how KE PSE is drastically affected. Hence, among the three methods, KE CE is preferred over KE PSE and SL TIRT, while SL TIRT is preferred over KE PSE.

Applying Test Equating Methods

2017-03-06 Education
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Release : 2017-03-06
Genre : Education
Kind : eBook
Book Rating : 240/5 ( reviews)

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Book Synopsis Applying Test Equating Methods by : Jorge González

Download or read book Applying Test Equating Methods written by Jorge González. This book was released on 2017-03-06. 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.

The Kernel Method of Test Equating

2006-05-10 Business & Economics
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Release : 2006-05-10
Genre : Business & Economics
Kind : eBook
Book Rating : 193/5 ( reviews)

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Book Synopsis The Kernel Method of Test Equating by : Alina A. von Davier

Download or read book The Kernel Method of Test Equating written by Alina A. von Davier. This book was released on 2006-05-10. Available in PDF, EPUB and Kindle. Book excerpt: KE is applied to the four major equating designs and to both Chain Equating and Post-Stratification Equating for the Non-Equivalent groups with Anchor Test Design. It will be an important reference for several groups: (a) Statisticians (b) Practitioners and (c) Instructors in psychometric and measurement programs. The authors assume some familiarity with linear and equipercentile test equating, and with matrix algebra.

Comparison of IRT Observed-score Equating with Both IRT True- Score and Classical Equipercentile Equating

1993
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Release : 1993
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Book Synopsis Comparison of IRT Observed-score Equating with Both IRT True- Score and Classical Equipercentile Equating by : Tianqi Han

Download or read book Comparison of IRT Observed-score Equating with Both IRT True- Score and Classical Equipercentile Equating written by Tianqi Han. This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt:

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