This is the official website for the International Personality Item Pool (IPIP). The site includes over 3,000 items and over 250 scales that have been constructed from the items. New items and scales are developed on an irregular basis. The items and scales are in the public domain, which means that one can copy, edit, translate, or use them for any purpose without asking permission and without paying a fee. However, the grant that supported the creation of this website has expired, so if you find the IPIP website useful, we ask you to consider making a donation through the link below.
For persons wandering into this site who have not completed a university course or two in psychological assessment, BEWARE: This site includes highly technical scientific information, and NO PERSONALITY TESTS ARE ADMINISTERED HERE.
If you are looking to take an on-line personality questionnaire based on IPIP items, try the following site: The IPIP-NEO
If you are looking for software to administer personality questionnaires based on IPIP items on your own computer or the Web, here are some possibilities: