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Volume :5 Issue : 17 1985      Add To Cart                                                                    Download

Analysis of Mental Test Data Using Rasch Logistic Model (An Empirical Study) (in Arabic)

Auther : Salah El-Din Allam

The purpose of this study was to investigate the use of rasch simple logistic model in item and test calibration. The test chosen for analysis was a 22-item Mental Alertness Test which is a subset of Algareb’s aptitude Battery. The test was administered to a sample of 126 freshman students from the college of Education at Al-Azhar University in Cairo.
Rasch Analysis was performed on the item – response data using (PROX) procedure form estimating the parameters of the model. The results indicated that the data sufficiently fit the model (the fit probability level 0.05) thus the 22 items can be viewed as an adequate set of homogenous items reflecting the underlying ability.
When the sample of students was divided into two ability levels and the data for the two groups was analyzed separately using the same procedure, the results indicated that the two test calibrations were statistically independent of the abilities of the students used for calibration.
This conclusion emphasized the importance of using Rasch Model in objective measurement of students’ ability.

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