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作者 Li, Dongyang
書名 Developing a common scale for Testlet model parameter estimates under the common-item nonequivalent groups design
國際標準書號 9781109201970
book jacket
說明 155 p
附註 Source: Dissertation Abstracts International, Volume: 70-06, Section: A, page: 2009
Adviser: Robert J. Mislevy
Thesis (Ph.D.)--University of Maryland, College Park, 2009
An important advantage of item response theory (IRT) is increased flexibility for methods of test equating. Several methods of IRT scaling have been developed, but under the assumption of local independence of item responses, such as Haebara's linking procedure. A recent development in IRT has been the introduction of Testlet Response Theory (TRT) models, in which local dependence among related sets of items is accounted for by the incorporation of "testlet effect" parameters in the model. This study extended Haebara's item characteristic curve scale linking method to the three-parameter logistic (3-PL) testlet model. Quadrature points and weights were used to approximate the estimated distribution of the testlet effect parameters so that the expected score of each item given theta can be computed and the scale linking parameters can be estimated. A simulation study was conducted to examine the performance of the proposed scale linking procedure by comparing it with the scale linking procedures that are based on the 3-PL IRT model and the graded response model. An operational data analysis was also performed to illustrate the application of the proposed scale linking method with real data
School code: 0117
Host Item Dissertation Abstracts International 70-06A
主題 Education, Tests and Measurements
Alt Author University of Maryland, College Park. Measurement, Statistics and Evaluation
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