Reliability Estimation and Validity Based on the Rasch Model for test Progressive Matrices “Advenced” of “Raven’s”on Algerian high level employees.

Abstract

Thestudy aimed to estimate the reliability and validity according to the Rasch model of the advanced raven PMA. The test contains 48 items. The sample consists of 94 high level employees in Sonatrach.Test reliability and validity was assessed using Rasch model and Winsteps.Results showed that the assumption of uni-dimensionality was satisfied, and the items score fit well the Rasch model. The reliability/separation index wasacceptable. And the analysis of Wright map indicates that the test possesses a fair level of validity.