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About
"The International Personality Item Pool (IPIP)" is a public domain collection of items for use in personality tests. It is managed by the Oregon Research Institute. The pool contains 3,329 items. These items make up more than 250 inventories that measure a variety of personality factors, many of which correlate well to better-known systems such as the 16PF Questionnaire and the Big Five personality traits. IPIP provides journal citations to trace those inventories back to the publication as well as correlation tables between questions of the same factor and between results from different inventories for comparison. Scoring keys that mention the items used for a test are given in a list form; they can be formatted into questionnaires.