أثر حجم العينة في الأداء التفاضلي للمفردة وفقا لنظرية الاستجابة للفقرة

Abstract EN

The current study examined the effect of different sample sizes to detect the item differential functioning (DIF).

the study has used three different sizes of the samples (300, 500, 1000), as well as to test a component of twenty polytomous items, where each item has five categories.

they were used graded response model as a single polytomous item response theory model to estimate items and individuals’ parameters.

the study has used the mantel-haenszel (MH) way to detect (DIF) through each case for the different samples.

the results of the study showed the inverse relationship between the sample size and the number of items, which showed a differential performer.