Type I Error Rates for Parscale’s Fit Index  

Oleh:

Demars, Christine E.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Educational and Psychological Measurement vol. 65 no. 1 (Feb. 2005), page 42-50.
Topik: item fit; polytomous IRT; PARSCALE; graded response; partial credit
Fulltext: 42.pdf (76.53KB)

Isi artikel

Type I error rates for PARSCALE’s fit statistic were examined. Data were generated to fit the partial credit or graded response model, with test lengths of 10 or 20 items. The ability distributionwas simulated to be either normal or uniform.Type I error rates were inflated for the shorter test length and, for the graded-response model, also for the longer test length when the ability distributionwas uniform. In conditions in which awas inflated, it was particularly high when one or more response categories were used infrequently. Overall, PARSCALE’s fit index is not recommended for short tests.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali