Rasch 평정척도 경계점을 이용한 기준선 설정 방안 탐색

초록

The purpose of this study is to introduce standard setting method using Rasch Rating scale model. To do so, the subjects of the study were 141 students in elementary school in Korea and 17 teachers were involved as judges. The procedures to set multiple-cut offs using Rasch Rating scale model in this study were as follows; The material was a reading test comprising 20 items. A group of 17 raters were asked to rate the 20 items, indicating what minimum ability level on the five-point scale a student should exhibit to get each item right. the items were rated 1 to 5, 1 indicating the lowest level and 5 the highest. The items were calibrated using Rasch Rating scale model. The next step was to calibrate the items on the basis of actual student performances. Person measures were converted into the rater frame-of reference by means of the linear equating method. Since the person measures have been brought to the framework of the rater-based analysis thresholds were used to set multiple-cut offs after equating. For its successful implementation in the field of criterion-referenced testing, some suggestions were discussed and implications were given.

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