Item grouping and item randomization in personality measurement |
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Authors: | Kraig L Schell Frederick L Oswald |
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Institution: | 1. Department of Psychology, Angelo State University, United States;2. Department of Psychology, Rice University, United States |
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Abstract: | This paper describes a study examining the impact of item order in personality measurement on reliability, measurement equivalence and scale-level correlations. A large sample of university students completed one of three forms of the International Personality Item Pool version of the Big Five personality inventory: items sorted at random, items sorted by factor, and items cycled through factors. Results showed that the underlying measurement model and the internal consistency of the IPIP-Big Five scale was unaffected by differences in item order. Also, most of the scale-level correlations among factors were not significantly different across forms. Implications for the administration of tests and interpretation of test scores are discussed, and future research directions are offered. |
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Keywords: | Personality Measurement Psychometrics Validity Reliability Item order |
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