A Review of Test Equating Methods with a Special Focus on IRT-Based Approaches

The overall aim of this work is to review test equating methods with a particularly detailed description of item response theory (IRT) equating. Test score equating is used to compare different test scores from different test forms. Several methods have been developed to conduct equating: traditiona...

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Main Authors: Valentina Sansivieri, Marie Wiberg, Mariagiulia Matteucci
Format: Article
Language:English
Published: University of Bologna 2018-03-01
Series:Statistica
Subjects:
Online Access:https://rivista-statistica.unibo.it/article/view/7066
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author Valentina Sansivieri
Marie Wiberg
Mariagiulia Matteucci
author_facet Valentina Sansivieri
Marie Wiberg
Mariagiulia Matteucci
author_sort Valentina Sansivieri
collection DOAJ
description The overall aim of this work is to review test equating methods with a particularly detailed description of item response theory (IRT) equating. Test score equating is used to compare different test scores from different test forms. Several methods have been developed to conduct equating: traditional methods, kernel method, and IRT equating. We synthetically explain the traditional equating methods which include mean equating, linear equating and equipercentile equating and which have been developed under all the possible data collection designs. We also briefly describe the idea of the kernel method: this is a unified approach to test equating for which recent interesting developments have been proposed. Then we focus on IRT equating, by describing old and new methods: in particular, we define IRT observed-score kernel equating and IRT observed-score equating using covariates, as well as other recent proposals in this field. We conclude the review by describing strengths and weaknesses of the different discussed approaches and by identifying future research topics.
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spelling doaj.art-8a038e5fd414420b87cb39bf40983fe02022-12-21T20:01:26ZengUniversity of BolognaStatistica0390-590X1973-22012018-03-0177432935210.6092/issn.1973-2201/70667062A Review of Test Equating Methods with a Special Focus on IRT-Based ApproachesValentina Sansivieri0Marie Wiberg1Mariagiulia Matteucci2Alma Mater Studiorum - Università di BolognaUmeå UniversityAlma Mater Studiorum - Università di BolognaThe overall aim of this work is to review test equating methods with a particularly detailed description of item response theory (IRT) equating. Test score equating is used to compare different test scores from different test forms. Several methods have been developed to conduct equating: traditional methods, kernel method, and IRT equating. We synthetically explain the traditional equating methods which include mean equating, linear equating and equipercentile equating and which have been developed under all the possible data collection designs. We also briefly describe the idea of the kernel method: this is a unified approach to test equating for which recent interesting developments have been proposed. Then we focus on IRT equating, by describing old and new methods: in particular, we define IRT observed-score kernel equating and IRT observed-score equating using covariates, as well as other recent proposals in this field. We conclude the review by describing strengths and weaknesses of the different discussed approaches and by identifying future research topics.https://rivista-statistica.unibo.it/article/view/7066Test equatingIRT test equatingItem response theory
spellingShingle Valentina Sansivieri
Marie Wiberg
Mariagiulia Matteucci
A Review of Test Equating Methods with a Special Focus on IRT-Based Approaches
Statistica
Test equating
IRT test equating
Item response theory
title A Review of Test Equating Methods with a Special Focus on IRT-Based Approaches
title_full A Review of Test Equating Methods with a Special Focus on IRT-Based Approaches
title_fullStr A Review of Test Equating Methods with a Special Focus on IRT-Based Approaches
title_full_unstemmed A Review of Test Equating Methods with a Special Focus on IRT-Based Approaches
title_short A Review of Test Equating Methods with a Special Focus on IRT-Based Approaches
title_sort review of test equating methods with a special focus on irt based approaches
topic Test equating
IRT test equating
Item response theory
url https://rivista-statistica.unibo.it/article/view/7066
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AT valentinasansivieri reviewoftestequatingmethodswithaspecialfocusonirtbasedapproaches
AT mariewiberg reviewoftestequatingmethodswithaspecialfocusonirtbasedapproaches
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