A comparative item analysis study of a language testing instrument  

Oleh:

Reynolds, Trudy ; Perkins, Kyle

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Language Testing (Full Text & ada di PROQUEST dari th 1998 - terbaru) vol. 11 no. 1 (1994), page 1-14.
Fulltext: 1.pdf (532.08KB)

Isi artikel

The goals of this study were threefold: (1) to provide a comparative analysis of five different item analysis indices using both IRT and nIoRnT- indices; (2) to describe the characteristics of flagged items; and (3) to investigate the appropriateness of logistic regression as an item analysis technique for further studies. The performance of five item analysis indices was examined in this study; p-value, point-biserial correlation, Rasch b parameter, Rasch &2 chi; fit and &2 chi; from the logistic regression model. A factor analysis indicated that the first factor was a difficulty factor and included the R baasncdh p-value indices, whereas the second factor represented the discrimination power of an item and consisted of the R2 asch χfit, &2 chi; from the logistic regression and the point-biserial correlation. There was a tendency for difficult items to exhibit more unusual response patterns. T2 he χ from the logistic regression fit was found to be an appropriate index when a researcher is attempting to detect items that function differentially and when the subject pool consists of varying ability groups.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali