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Abedalaziz, Nabeel; Leng, Chin Hai – Malaysian Online Journal of Educational Sciences, 2013
Most of the tests and inventories used by counseling psychologists have been developed using CTT; IRT derives from what is called latent trait theory. A number of important differences exist between CTT- versus IRT-based approaches to both test development and evaluation, as well as the process of scoring the response profiles of individual…
Descriptors: Test Theory, Item Response Theory, Difficulty Level, Models