The improvement of the quality of items by selection, substitution and review will increase a test's validity and reliability. Current essay will present results referring to psychometric properties of WISC-III items, specifically difficulty, discrimination and validity of items. Since WISC-III is a widely used test for the assessment of intelligence, knowledge on the quality of items of the test seems to be essential for professionals using it. Analyses were performed on data 801 protocols obtained in the adaptation research of a test within a Brazilian context. Analyses showed that the adapted items presented adequate psychometric features which make it a reliable diagnostic tool.
WISC-III; items analysis; validity of items
