추측 및 부주의 문항반응유형에 대한 Rasch 모형을 적용한 5가지 피험자 표준화 적합도 지수의 민감도 분석

초록

The purpose of this study is to compare the five Rasch-model-based fit indices: UWz, Wz, Lz,ECI2z,ECI4z, in terms of their sensitivity to two types of person aberrances,Guessing and Carelessness, using Bs(Beyond Ability Surprise Index) and Wc (Within Ability Concern Index) to identify criterion aberrant cases. The procedures utilized in this study involve simulated data. The extended Bs & Wc indexes of the Sato Caution Index are utilized to identify criterion aberrant person. The Bs index identifies "Guessing" when persons solve a proportionately large number of items which are considered difficulty and beyond their ability level. The Wc index identifies "Carelessness" when a person obtains several items wrong which are considered easy and within their ability level. The findings of this study indicate that the five person-related fit indices are not reasonably sensitive with respect to their capability for detecting responses with guessing and carelessness aberrances. However, the ECI2z and ECI4z indices appear somewhat more sensitive to the presence of guessing and carelessness compared to the other three indicies.