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Section Preequating Under the Equivalent Groups Design Without IRT
Author(s) -
Guo Hongwen,
Puhan Gautam
Publication year - 2014
Publication title -
journal of educational measurement
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.917
H-Index - 47
eISSN - 1745-3984
pISSN - 0022-0655
DOI - 10.1111/jedm.12049
Subject(s) - equating , section (typography) , test (biology) , mathematics , simple (philosophy) , imperfect , test score , statistics , item response theory , computer science , psychometrics , standardized test , rasch model , biology , operating system , paleontology , philosophy , linguistics , epistemology
In this article, we introduce a section preequating (SPE) method (linear and nonlinear) under the randomly equivalent groups design. In this equating design, sections of Test X (a future new form) and another existing Test Y (an old form already on scale) are administered. The sections of Test X are equated to Test Y, after adjusting for the imperfect correlation between sections of Test X, to obtain the equated score on the complete form of X. Simulations and a real‐data application show that the proposed SPE method is fairly simple and accurate.