DETECTING CROSSING DIFFERENTIAL ITEM FUNCTIONING (CDIF): BASED ON ITEM RESPONSE THEORY
| Main Author: | EFFENDI, EFFENDI |
|---|---|
| Format: | Article info application/pdf Journal |
| Bahasa: | ind |
| Terbitan: |
PROGRAM STUDI PENELITIAN DAN EVALUASI PENDIDIKAN
, 2011
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| Subjects: | |
| Online Access: |
http://journal.unj.ac.id/unj/index.php/jep/article/view/2258 http://journal.unj.ac.id/unj/index.php/jep/article/view/2258/1754 |
Daftar Isi:
- The objective of this study was to find out the empirical data of the index of crossing Differential Item Functioning (DIF) and the difference of sensitivity among methods in detecting crossing DIF according to the Item Response Theory. The study used quasi experimental methods with 1 x 3 designs. The independent variables were Rajuâ€TMs area measure, Lordâ€TMs chi-square, likelihood ratio test, and sample size, while the dependent variable was index of crossing DIF. Methods for detecting uniform DIF had been well developed, where as those for identifying the presence of crossing DIF had not. The three methods compared were Rajuâ€TMs area measure, Lordâ€TMs chi-square, and likelihood ratio test. Factors manipulated were sample size, ability differences between two groups, percentage of DIF, and the examineeâ€TMs response. The results indicated that all methods were good for the detection of crossing DIF, but Rajuâ€TMs area measure was the most sensitive among those methods compared. Besides, there was no DIF caused by gender differences among the examinees with great ability.
- Tujuan utama dari penelitian ini adalah untuk mendapatkan data empirik tentang indek dari crossing differential item functioning (CDIF) dan perbedaan sensitifitas antara metode pendeteksian CDIP berdasarkan teori responsi butir. Penelitian ini menggunakan metode kuasi eksperimen dengan desain 1 x 3. Variabel bebas adalah Luasan menurut Raju, Khi-kuadrat menurut Lord, tes rasio kebolehjadian, serta ukuran sampel, sedangkan variabel terikatnya adalah indek CDIF. Metode untuk pendeteksian uniform DIF telah banyak dikembangkan, sedangkan untuk pendeteksian CDIF belum banyak dikembangkan. Ketiga metode yang dibandingkan adalah Luasan menurut Raju, Khi-kuadrat menurut Lord, dan Tes Rasio Kebolehjadian. Faktor yang dimanipulasi adalah ukuran sampel, perbedaan kemampuan responden dari dua kelompok, persentase CDIF, serta hasil tes responden. Hasil penelitian menunjukkan bahwa ketiga metode dapat digunakan untuk pendeteksian CDIF, tetapi Metode Luasan menurut Raju sangat sensitif dalam mendeteksi CDIF dibandingkan dengan kedua metode yang lain. Disamping itu tidak ada DIF yang disebabkan perbedaan gender pada tingkat kemampuan tinggi.