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Conference Paper: Considerations to evaluate equating results based on IRT calibration and equating

TitleConsiderations to evaluate equating results based on IRT calibration and equating
Authors
Issue Date2011
PublisherThe Psychometric Society.
Citation
The 76th Annual and the 17th International Meeting of the Psychometric Society (IMPS 2011), Hong Kong, 18-22 July 2011. In Conference Program of the IMPS 2011, 2011, p. 232 How to Cite?
Abstract
Item Response Theory (IRT) is commonly used to calibrate and equate the state assessment test programs. Equating is one of the crucial steps to generate score conversion table which is used for producing scale score and proficiency level for each individual student. Whether or not the equating is conducted properly considering its practical consequences? Whether or not the anchor set is appropriately applied for the use of equating? Are there any outlier anchor items to be removed from the anchor set? This presentation highlights some considerations to evaluate equating results, including IRT model fit, Test Characteristic Curves (TCCs), score distributions, the score and proficiency profile from the reference year, and property of the anchor set. Also, the consideration and alternative to remove outlier anchor items is discussed. Examples are illustrated as well to address the practical consequences of equating.
DescriptionParallel Session: Equating and Linking: no. D1-LP-06
Persistent Identifierhttp://hdl.handle.net/10722/160930

 

DC FieldValueLanguage
dc.contributor.authorZhao, Yen_US
dc.date.accessioned2012-08-16T06:25:31Z-
dc.date.available2012-08-16T06:25:31Z-
dc.date.issued2011en_US
dc.identifier.citationThe 76th Annual and the 17th International Meeting of the Psychometric Society (IMPS 2011), Hong Kong, 18-22 July 2011. In Conference Program of the IMPS 2011, 2011, p. 232en_US
dc.identifier.urihttp://hdl.handle.net/10722/160930-
dc.descriptionParallel Session: Equating and Linking: no. D1-LP-06-
dc.description.abstractItem Response Theory (IRT) is commonly used to calibrate and equate the state assessment test programs. Equating is one of the crucial steps to generate score conversion table which is used for producing scale score and proficiency level for each individual student. Whether or not the equating is conducted properly considering its practical consequences? Whether or not the anchor set is appropriately applied for the use of equating? Are there any outlier anchor items to be removed from the anchor set? This presentation highlights some considerations to evaluate equating results, including IRT model fit, Test Characteristic Curves (TCCs), score distributions, the score and proficiency profile from the reference year, and property of the anchor set. Also, the consideration and alternative to remove outlier anchor items is discussed. Examples are illustrated as well to address the practical consequences of equating.-
dc.languageengen_US
dc.publisherThe Psychometric Society.-
dc.relation.ispartofConference Program of the 76th Annual and 17th International Meeting of the Psychometric Society, IMPS 2011en_US
dc.titleConsiderations to evaluate equating results based on IRT calibration and equatingen_US
dc.typeConference_Paperen_US
dc.identifier.emailZhao, Y: myzhao@hku.hken_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.hkuros203307en_US
dc.identifier.spage232-
dc.identifier.epage232-
dc.customcontrol.immutablesml 130325-

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