Why is process of item analysis important in assessment psychology?
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Item Analysis. Item Analysis is animportant (probably the mostimportant) tool to increase test effectiveness. Each items contribution is analyzed and assessed. To write effective items, it is necessary to examine whether they are measuring the fact, idea, or concept for which they were intended.
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•1 There can be little doubt that item analysis is a vitally important operation in the development of a new test and one that should invariably be carried out unless special circumstances.
•2 Both the validity and reliability of any test depend ultimately on the characteristics of its items. High reliability and validity can be built into a test in advance through item analysis.
•3 Tests can be improved through the selection, substitution or revision of items.
•4 Item analysis makes it possible to shorten a test and at the same time to increase its validity and reliability.
•2 Both the validity and reliability of any test depend ultimately on the characteristics of its items. High reliability and validity can be built into a test in advance through item analysis.
•3 Tests can be improved through the selection, substitution or revision of items.
•4 Item analysis makes it possible to shorten a test and at the same time to increase its validity and reliability.
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