أثر إختلاف نموذج الاستجابة للمفردة(1PL,2PL,3PL)‎ في الأداء التفاضلي للمفردة

Abstract EN

The study aimed to examine the effect of choosing the item response model (one-parameter, two-parameters, three-parameters) in revealing the differential item functioning and comparison percentage of item with differential item functioning and knowing the significance of the differences in the value of the differential item functioning and its mean.

to achieve the objectives of the study, the researcher relied on the results of the master’s enrollment test held at the higher institute of languages at the university of aleppo, which consisted of (60) items of the objective type, dual response (0 or 1), and their response to (1000) applicants from theoretical and applied colleges.

after making sure that the assumptions of the response theory of the one-dimensional singularity (using factor analysis, item saturation, double-correlation coefficient), local independence and characteristic curve of singularity, the researcher made sure of the suitability of the vocabulary for the two-dimensional models using jmetrik, the results showed1 :.

that (31.481%) of the items did not show a differential dif according to the characteristic curve method of the paragraph in the case of the three models (1pl, 2pl, 3pl).

2.

that (44.444%) of the items showed dif according to the characteristic curve method for the item when only one model (1pl, 2pl, 3pl).

3.

that (24.074%) of the items showed a dif according to the item characteristic curve method in two models.

4.

no item showed dif according to the item characteristic curve method in all models.

5.

the results showed that the individual characteristic curve method for detecting dif of the two-parameter model showed the highest percentage of items with dif with a percentage of (68.5%), and then the percentage of items with dif according to the characteristic curve method for the item and the one-parameter model with a percentage of (22.222%).

and then the percentage of items with dif according to the characteristic curve method for the items and the threeparameter model at a rate of (1.9%).