A comparison of different equating methods for linking testlet-based tests

Zhonghua  ZHANG

A comparison of different equating methods for linking testlet-based tests

Zhonghua ZHANG

Department of Curriculum and Instruction (C&I)

Research output: Contribution to conference › Papers

Abstract

The present study developed the item characteristic curve method and testlet characteristic curve method for linking the testlet-based tests under testlet response model. Then the effectiveness of the characteristic curve methods and the concurrent calibration method as regarding to testlet response model and IRT were compared under different conditions in this simulation study. The results indicated that the newly developed methods were shown to perform well in the recovery of the generating item parameters. Larger testlet variances led to greater equating errors. The study contributes to a better understanding of the effectiveness of different equating methods for testlet-based tests and helps clarify the influences of the local dependences, testlet variances, and number of common testlets on equating results.

Original language	English
Publication status	Published - 2011
Event	2011 Annual Meeting of American Educational Research Association: “Inciting the Social Imagination: Education Research for the Public Good” - New Orleans, United States Duration: 08 Apr 2011 → 12 Apr 2011 https://www.aera.net/Events-Meetings/Annual-Meeting/Previous-Annual-Meetings/2011-Annual-Meeting

Conference

Conference	2011 Annual Meeting of American Educational Research Association: “Inciting the Social Imagination: Education Research for the Public Good”
Abbreviated title	AERA 2011
Country/Territory	United States
City	New Orleans
Period	08/04/11 → 12/04/11
Internet address	https://www.aera.net/Events-Meetings/Annual-Meeting/Previous-Annual-Meetings/2011-Annual-Meeting

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title = "A comparison of different equating methods for linking testlet-based tests",

abstract = "The present study developed the item characteristic curve method and testlet characteristic curve method for linking the testlet-based tests under testlet response model. Then the effectiveness of the characteristic curve methods and the concurrent calibration method as regarding to testlet response model and IRT were compared under different conditions in this simulation study. The results indicated that the newly developed methods were shown to perform well in the recovery of the generating item parameters. Larger testlet variances led to greater equating errors. The study contributes to a better understanding of the effectiveness of different equating methods for testlet-based tests and helps clarify the influences of the local dependences, testlet variances, and number of common testlets on equating results.",

author = "Zhonghua ZHANG",

year = "2011",

language = "English",

note = "2011 Annual Meeting of American Educational Research Association: “Inciting the Social Imagination: Education Research for the Public Good”, AERA 2011 ; Conference date: 08-04-2011 Through 12-04-2011",

url = "https://www.aera.net/Events-Meetings/Annual-Meeting/Previous-Annual-Meetings/2011-Annual-Meeting",

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TY - CONF

T1 - A comparison of different equating methods for linking testlet-based tests

AU - ZHANG, Zhonghua

PY - 2011

Y1 - 2011

N2 - The present study developed the item characteristic curve method and testlet characteristic curve method for linking the testlet-based tests under testlet response model. Then the effectiveness of the characteristic curve methods and the concurrent calibration method as regarding to testlet response model and IRT were compared under different conditions in this simulation study. The results indicated that the newly developed methods were shown to perform well in the recovery of the generating item parameters. Larger testlet variances led to greater equating errors. The study contributes to a better understanding of the effectiveness of different equating methods for testlet-based tests and helps clarify the influences of the local dependences, testlet variances, and number of common testlets on equating results.

AB - The present study developed the item characteristic curve method and testlet characteristic curve method for linking the testlet-based tests under testlet response model. Then the effectiveness of the characteristic curve methods and the concurrent calibration method as regarding to testlet response model and IRT were compared under different conditions in this simulation study. The results indicated that the newly developed methods were shown to perform well in the recovery of the generating item parameters. Larger testlet variances led to greater equating errors. The study contributes to a better understanding of the effectiveness of different equating methods for testlet-based tests and helps clarify the influences of the local dependences, testlet variances, and number of common testlets on equating results.

M3 - Papers

T2 - 2011 Annual Meeting of American Educational Research Association: “Inciting the Social Imagination: Education Research for the Public Good”

Y2 - 8 April 2011 through 12 April 2011

ER -

A comparison of different equating methods for linking testlet-based tests

Abstract

Conference

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