(International Personality Item Pool
of the NEO PI-Rô)
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 30-40 minutes.
- Over half a million 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
- Most people complete the inventory in 10-20 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
- Follow this
link if you wish to complete the short version of the IPIP-NEO.