Discuss the results.All three techniques of the IRT in the examination of the same series of DIF test variants differing in the number of maths, but the test flagged by DIF because different sommutithan, and the criteria used for this audit was received. On the theory of IRT according to the DIF method can be used with a maths test scored Dichotomously, although the number of large display DIF. Are different because different criteria are applied by different methods, it is also important to check carefully for examination to try to explain why a different examination DIF? In the end, the result shows that there is no single method that can guarantee all the DIF test specified in the same way that the test is not based on the IRT IRT methods that should be used to resolve the uncertainty that destroy the usefulness of the method and the results of the two. How does IRT according to IRT-Based and how that can be compared to determine the best way to test that detected DIF.
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