Toward More Readable Big Five Personality Inventories (original) (raw)

2006, European Journal of Psychological Assessment

The Estonian version of the International Personality Item Pool NEO (IPIP-NEO; was administered to 297 participants in parallel with the Estonian version of the NEO-PI-R (Kallasmaa, . On average, the EPIP-NEO items were 3 words, 7 syllables, and 18 characters shorter than the NEO-PI-R items. By all relevant psychometrical properties the EPIP-NEO was comparable to the NEO-PI-R. The mean convergent correlation between the facet scales was .73. The scales with shorter and grammatically simpler items tended to have higher internal consistency. In an independent cross-validation sample the initial results were generally replicated. The scales also demonstrated an adequate cross-observer agreement. It is concluded that the EPIP-NEO, as a more readable personality inventory compared to the NEO-PI-R, is suitable for a wider range of samples with different levels of reading skills. ). The IPIP-NEO items are short, using mainly familiar words, and with a simple grammar. The IPIP-NEO was designed to match the original NEO-PI-R structure in which five personality dimensions are described by 30 facets. The IPIP-NEO facet scales consist of 10 items each, whereas facet scales of the NEO-PI-R include eight items. According to Goldberg (1999) the average of the coefficient α values of the IPIP-

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