(International Personality Item Pool 
Representation of the NEO PI-R®)

Warnings about this 300-Item Version of the IPIP-NEO

Yes, I understand that responding to all items on this inventory is time consuming and that sometimes technical difficulties prevent the results from being displayed. I am responding to this inventory with the full knowledge of the risk that I might not receive results. I accept full responsibility and risk for the time I invest in responding to this inventory.

In the Unlikely Event that the Program Does Crash...

A problem with your Internet connection or with Penn State's network is probably at fault. If a crash occurs, results are not saved and you must start the inventory from the beginning. You may follow this link for information about service interruptions at Penn State.Your best bet for completing the inventory is to simply wait an hour or two and try again. You may want to use a different machine and/or Internet connection. If you experience any technical difficulties (items fail to appear on the screen, test does not advance to next page, Web browser freezes, no narrative report is displayed, etc.) you may send an email describing the problem to me at, although it is unlikely that I can provide help beyond the information on this page. Other persons who may have referred you to this site would prefer that you report technical difficulties to me rather than to them.

Purpose of this On-Line Inventory

Acknowledgment that You Understand the Limitations of the Test Results

Before you can access the test, you must endorse the statement below by clicking the checkbox.
Yes, I understand that the primary purpose of this site is to educate the public about the five factor model of personality, and only secondarily, to estimate the respondent's standing within the five factor model. I understand that the program that generates the report is designed to produce estimates that are as accurate as possible, but that measurement error or improper responding can produce inaccurate results. If I think I have answered the items honestly and carefully but my results are inaccurate or not as pleasing as I would like them to be, I will have knowledgeable acquaintances evaluate the validity of the report before contacting Dr. Johnson. If I choose to critique the test or narrative report after receiving feedback from knowledgeable acquaintances, I will do so in a courteous and civil manner.

For Further Information


Any individual who uses the items, scripts, and norms for this IPIP inventory is responsible for following ethical practices and legal restrictions for any purpose, including, but not limited to, counseling, advising, education, and personnel selection and development. John A. Johnson and the Pennsylvania State University are not responsible for misuse of this IPIP inventory by other persons.


Dr. Johnson would like to thank Robin Lowenthal for her invaluable debugging assistance and Thore Harald Hoye for his programming advice. Neither of these individuals is responsible for any errors that may remain in the program.

  Clicking this button will take you to the first 60 questions only if you have acknowledged that you have read the above information, agree to accept the risks involved in responding to this inventory, and agree to communicate courteously with the site author.