International Personality Item Pool

A Scientific Collaboratory for the Development of Advanced Measures of Personality and Other Individual Differences

Site Overview

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.

Support the IPIP Website with a Voluntary Donation

Warning about the nature of this site

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:

Do you know what you are doing and what you are looking for? Go straight to IPIP items and scales

Are you not sure how to use the IPIP? A step-by-step, how-to guide

In addition, here is some more information about the IPIP project

Contact the webmaster at with comments about this website.
This page last modified on 11/05/23.