استخدام نموذج الاستجابات المتدرجة في تطوير مقياس قلق الإصابة بفيروس كورونا (كوفيد 19)‎ و تحوراته و التحقق من اللاتغاير في بارامترات مفرداته وفقا لبعض المتغيرات الديموغرافية

Abstract EN

The current research conducted to build infection with Coronavirus COVID 19 and its mutations anxiety scale, and verify its psychometric properties according to Samejima Graded Response Model (GRM) through a sample of (488) students from Umm Al-Qura University.

The scale was constructed from (30) items.

Verifying the validity of the scale by presenting it to the experts, then conducting exploratory factor analysis, then verifying the fit of GRM to the data derived from the scale was done.

All these procedures resulted in the validity of (20) items and their fit to GRM.

The discrimination parameters and thresholds were determined for each item, Invariance property for item parameters of the scale was also verified between two random groups of students, between two groups of males and females, between two groups of undergraduate and postgraduate students, and between two groups of students in theoretical and practical disciplines.

The marginal reliability was also verified, whose value for the sample as a whole was 0.91, and its value ranged between (0.89, 0.94) for the subgroups in the sample, which confirms validity of scale in its final form to measure infection with the Corona virus and its mutations anxiety