You can now choose between two versions of the IPIP-NEO

The original IPIP-NEO

• The original IPIP-NEO inventory contains 300 items.
• Most people complete the inventory in 40-60 minutes.
• Over 200,000 persons have successfully completed this online inventory since it was first posted on the Internet.
• The original IPIP-NEO will provide somewhat more reliable and valid results than the shorter version.
• Best estimates indicate that the scoring program for the original IPIP-NEO executes properly and provides feedback over 99% of the time.
• Computer experts have been unable to identify the malfunctions that occasionally prevent scoring and feedback from taking place.
• Follow this link if you wish to complete the original IPIP-NEO.

The new, short version of the IPIP-NEO

• The short IPIP-NEO was designed to measure exactly the same traits as the original IPIP-NEO, but more efficiently with fewer items.
• The short version of the IPIP-NEO inventory uses 120 items from the original inventory.
• Most people complete the inventory in 15-25 minutes.
• Responses from over 20,000 persons were used to insure that the short version possesses acceptable measurement reliability.
• Although the short version meets professional standards of reliability, the longer version is even more reliable.
• The short IPIP-NEO provides an alternative for persons who do not have time to complete the original inventory.
• Persons may also wish to try the short version if they experience difficulty receiving results from the scoring programs of the original IPIP-NEO.
• Follow this link if you wish to complete the short version of the IPIP-NEO.