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Personality Instruments

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What are the differences in test construction between the Minnesota Multiphasic Personality Inventory (MMPI) and the Neuroticism-Extroversion-Openness (NEO) Personality Inventory? Which do you think is more valid? Explain your response.

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This solution compares the MMPI and the NEO Personality Inventories on the validity of the instruments.

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The primary difference between the two tests is that the NEO-PI-R (Costa & MCcrae, 1992) is constructed based on factor analysis that is designed to assess major traits and other personality factors. The Minnesota Multiphasic Personality (MMPI, Hathaway & McKinley, 1940) is designed for psychiatric assessment and diagnoses. It contains 566 true/false items. The test has ten clinical scales, and four validity scales. In addition, to the clinical scales and validity scales, the MMPI consists of Content Scales (Wiggins, 1966 as cited in Cohen & Swerdlik, 2005), and supplementary scales. Studies are presented that show the MMPI to have moderate validity and internal ...

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