An Approach to Test Equating under the Latent D-scoring Method. Issue 3 (3rd July 2021)

• Record Type: Journal Article
• Authors: Dimitrov, Dimiter M.; Atanasov, Dimitar V.
• Is Part Of: Measurement. Volume 19:Issue 3(2021)
• Page Start: 153
• Page End: 162
• Publication Date: 2021-07-03
• Subjects: Test equating -- D-scoring method -- rescaling; Social sciences -- Methodology -- Periodicals; Social sciences -- Statistical methods -- Periodicals; Social sciences -- Mathematical models -- Periodicals; Measurement -- Periodicals; 300.72
• DOI: 10.1080/15366367.2020.1843107
• Languages: English
• ISSNs: 1536-6367

Abstract

ABSTRACT: This study offers an approach to test equating under the latent D-scoring method (DSM-L) using the nonequivalent groups with anchor tests (NEAT) design. The accuracy of the test equating was examined via a simulation study under a 3 × 3 design by two conditions: group ability at three levels and test difficulty at three levels. The results for bias (systematic error) and root mean square error (RMSE; total error) indicated very high accuracy in the recovery of true equated D-scores across all simulation conditions, providing strong support of the proposed approach to test equating under the DSM-L.