Abstract:A psychological test should be developed to accurately estimate the measured construct, being insensitive to extraneous factors that could affect it. The way in which the various external factors jeopardize the item responses is known as test bias and minimizing these influences is a primary concern for test developers. A relatively recent category of psychometric techniques that aim to identify those items that function differently in a group of test-takers is called Differential Item Functioning (DIF). The p… Show more
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