Comparación de métodos estadísticos para la evaluación del funcionamiento diferencial de los ítems
Abstract
A comparative study over four methods used to detect the differential item functioning is the focus of this paper. These methods are: the delta method (frecuently used in the classic theory's context), the methods of proportion's differences and the chi square (both based on the contingency's table), and the contrast of the b parameters, obtained when stimating the caracteristic curve of the item. The data used has been accomplished from a test about text's comprehension administered to 519 Secondary Education's students, being sex the differencing variable of the groups. After the application of these different techniques, the results obtained are similar.Downloads
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