Rasch 평정척도 모형을 적용한 한국과 미국 대학생 운동 동기검사지(EMI-2) 단축판 개발 및 비교

Abstract

The purpose of this study was to develop and compare the exercise motivations inventory-2(EMI-2) short version for Korean and American university students by applying Rasch rating scale mode(RSM). The subjects of this study were 379 Korean university students and 373 American university students. The Rasch RSM computer prgram, Winsteps 4.5.2 was used to analyze the data. The results were as follow. First, Korean university student EMI-2(KEMI-2) was found to be suitable for 6-point Likert scale, while American university student EMI-2(AEMI-2) was found to be suitable for 5-point Likert scale. Second, the 9-item in KEMI-2 and 7-item in AEMI-2 were over the standard range(0.6~1.4) of the infit or outfit in Rasch RSM. Third, the 5-item in KEMI-2 and 5-item in AEMI-2 were selected as the differential item functioning(DIF) between gender. Fourth, Rasch RSM showed the item-ability map that was verified as the person separation index(PSI) over 2.0. Both KEMI-2(PSI=3.64) and AEMI-2(PSI=3.96) were satisfied item-ability map setting. Finally, this study developed 40-item, 6-point scale EMI-2 for Korean university student, and 42-item, 5-point scale EMI-2 for American university student. In addition, the newly constructed short version of the EMI-2 for university students in Korea and America should be validated to another sample to increase external validity.