أثر طول الاستبانة على دقة تقديرات القدرة و الخصائص السيكومترية للفقرة و المقياس في ضوء نظرية الاستجابة للفقرة

Abstract EN

The present study aimed at identifying the effect of the length of the questionnaire on the Accuracy of Ability Estimation of the parameters of examinees and The parameters of Items and scale in the light of IRT, the sample of the study was selected in a available sample by distributing the questionnaire samples to the teachers.

Amounted (1425) male and female teachers, were (1038) male and (387) female distributed to (492) teachers of the questionnaire (10 items) And (497) teachers of the questionnaire (30 items) and (436) teachers of the questionnaire model (60 items), in order to achieve the objectives of the study; Abdel-Jawad & Metwally (1993) questionnaire job satisfaction of teachers was used, The results showed statistically significant differences at the level of (α = 0.05) between the standard error average in the estimation of the abilities of individual related to the length of the questionnaire; the results showed differences between the standard error averages in favor Length of questionnaire (60) compared to (length of questionnaire (10) and (30)), then for (30) compared to the length of the questionnaire (10).

The findings also indicate that there were statistically significant differences at the level of significance (α = 0.05) between the averages of the standard error in estimating the discrimination parameter for the item related to the length of the questionnaire; a differences between the average of the standard error in favor for the length (30) compared to the length of the questionnaire (10), and in favor of the length of the questionnaire (60) compared to the length of the questionnaire (10).

Lastly the results indicate there were no statistically significant differences between the averages of the standard error in estimating the difficulty parameter of the item due to the difficulty parameter and length of the questionnaire, and to the interaction of the difficulty parameter with the length of the questionnaire, and to the interaction of the difficulty parameter with the length of the questionnaire, in the light of the results of study the researcher recommended questionnaire developers as a tool for their research taking into account the length of the item to achieve accuracy in the speed estimates of the sample elements.

It is better to be from the same paragraph (30) or more