초등학생용 작업기억 검사의 개발 및 타당화 = Development and Validation of Work Memory Test for Elementary School Students

다국어 초록 (Multilingual Abstract)

This study developed the computer-based WM test for elementary school students and verified the validity based on Rasch measurement. The subjects of the study were S elementary school students located in Seoul, 30 preliminary prosecutors and 252 main prosecutors. The WM test consisted of eight sub-tests according to three sub-components, based on the multi-factorial model of Baddeley(2000). The collected data were structured into the phonological loop(i.e., digit recall, backward digit recall, and letter recall), the visuo-spatial sketchpad(i.e., matrix, backward matrix, arrow recall), and the central executive(i.e., reading span, symmetry span) through the confirmatory factor analysis. The results of Rasch analysis using the mirt and eRm package of the R program are as follows. First, the analysis of item fit index showed that three items were inappropriate. Second, person-item map analysis shows that each question is consistent with the outcome of the subject's performance and has an appropriate relationship. Third, seven items are selected in the analysis of differential item function(DIF). Fourth, the analysis of person separation reliability and separation index shows that the inspection tools are consistent and effectively separate the subjects' performance differences. Finally, the phonological loop 57 items, the visuo-spatial sketchpad 54 items, and the central executive 33 items were validated. The educational implications, limitations of this study, and future research directions are discussed.

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