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المدخل الى الدراسةيوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
A PSYCHOMETRIC STUDY ON LINKING AND DEVELOPING THE PROGRESSIVE MATRICES AND CATTELL’S INTELLIGENCE
TESTS BY USING RASCH’S MODEL
By
EMAN ABDUL-FATTAH EL-SYAED ABDUL-FATTAH
ABSTRACT
The main concern of the present study was investigated linking and developing the two tests for measuring general mental abilities: Cattell’s test (form A and B) and Raven’s progressive test. It scaled Cattell’s test and Reven’s test by using the modern theory in measurement. It linking Cattell’s test and Reven’s test in an integrated version by using Rasch’s model. It developed a bank of items for measuring general intelligence from which different testing forms can be obtained. It provided an objective test to the psychological tests for measuring intelligence which has validity and reliability better than those scaled in the light of the classical testing theory. It provided an objective and standardized testing version after linking and scaling the two tests using Rasch’s model. The study sample consisted of 785 students at the age of 15-19 who enrolled in secondary stages in Qalubiya Governorate. Two tools were used: Raven’s advanced progressive matrices and Cattell’s intelligence test (form A and B). after conducting the study procedures, the following findings were reached:
1) The order of the Cattel’s test difficulty items was different after scaling when compared with before scaling.
2) The rest of the items were different from the original order in Cattell’s test.
3) The order of the Raven’s test difficulty items was different after scaling when compared with before scaling.
4) The rest of the items were different from the original order in Raven’s test.
5) The order of both Cattel’s and Raven’s test difficulty items was different after scaling when compared with before scaling.
6) The rest of the items were different from the original order in Cattell’s test and Raven’s test.
7) There were no statistically significant differences between the students’ abilities means on any form of the integrated test and the shortened test. This means that the two forms of the two tests were homogeneous.