ERIC Number: EJ1321137
Record Type: Journal
Publication Date: 2021-Nov
Pages: 18
Abstractor: As Provided
ISBN: N/A
ISSN: EISSN-1531-7714
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Available Date: N/A
On the Use of Different Linkage Plans with Different Observed-Score Equipercentile Equating Methods
Wiberg, Marie
Practical Assessment, Research & Evaluation, v26 Article 23 Nov 2021
The overall aim was to examine the equated values when using different linkage plans and different observed-score equipercentile equating methods with the equivalent groups (EG) design and the nonequivalent groups with anchor test (NEAT) design. Both real data from a college admissions test and simulated data were used with frequency estimation, chained equating, and kernel equating methods. The overall results were that different linkage plans gave different equated values and standard errors (SEs) both in the EG design and in the NEAT design, and there were some differences between the equating methods. The simulation study confirmed the empirical results and suggested that the kernel equating methods gave lower SEs in the examined conditions and had fewer differences that mattered compared with traditional equating methods when different linking plans were used. Finally, when one of the test forms was easier or if the ability of the test groups differed, the choice of linkage plan had more of an impact than when the test forms or test groups were more similar.
Descriptors: Equated Scores, Test Items, Methods, College Entrance Examinations, Error of Measurement, Computation, Foreign Countries
Center for Educational Assessment. 813 North Pleasant Street, Amherst, MA 01002. e-mail: pare@umass.edu; Tel: 413-577-2180; Web site: https://scholarworks.umass.edu/pare
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Sweden
Grant or Contract Numbers: N/A
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