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Expected equating error resulting from incorrect handling of item parameter drift among the common items.

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Title: Expected equating error resulting from incorrect handling of item parameter drift among the common items.
Authors: Miller GE (AUTHOR), Fitzpatrick SJ (AUTHOR)
Source: Educational & Psychological Measurement. Jun2009, Vol. 69 Issue 3, p357-368. 12p.
Subject Terms: *Item response theory, *Evaluation, Glacial drift, Standardization, Simulation methods & models, Physical measurements, Estimation theory
Abstract: Incorrect handling of item parameter drift during the equating process can result in equating error. If the item parameter drift is due to construct-irrelevant factors, then inclusion of these items in the estimation of the equating constants can be expected to result in equating error. On the other hand, if the item parameter drift is related to the construct being measured, then removal of those items from the estimation of the equating constants can be expected to result in equating error. The effect of incorrect handling of item parameter drift on equating has been examined via simulation studies and other methods by a number of authors with mixed results. In this article, this effect is assessed by estimating the expected equating error under the assumptions that the three-parameter item response theory model is used for calibration--equating. [ABSTRACT FROM AUTHOR]
Copyright of Educational & Psychological Measurement is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Education Research Complete
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DbLabel: Education Research Complete
An: 105346816
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Incorrect handling of item parameter drift during the equating process can result in equating error. If the item parameter drift is due to construct-irrelevant factors, then inclusion of these items in the estimation of the equating constants can be expected to result in equating error. On the other hand, if the item parameter drift is related to the construct being measured, then removal of those items from the estimation of the equating constants can be expected to result in equating error. The effect of incorrect handling of item parameter drift on equating has been examined via simulation studies and other methods by a number of authors with mixed results. In this article, this effect is assessed by estimating the expected equating error under the assumptions that the three-parameter item response theory model is used for calibration--equating. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Educational & Psychological Measurement is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1177/0013164408322033
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      – Code: eng
        Text: English
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      – SubjectFull: Item response theory
        Type: general
      – SubjectFull: Evaluation
        Type: general
      – SubjectFull: Glacial drift
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      – SubjectFull: Standardization
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      – SubjectFull: Simulation methods & models
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      – SubjectFull: Physical measurements
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      – SubjectFull: Estimation theory
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              Text: Jun2009
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