Take this psychology test to find out about your personality! This test measures what many psychologists consider to be the five fundamental dimensions of personality. As you are rating yourself, you are encouraged to rate another person. By rating someone else you will tend to receive a more accurate assessment of your own personality. Also, you will be given a personality profile for the person you rate, which will allow you to compare yourself to this person on each of five basic personality dimensions. Try to rate someone whom you know well, such as a close friend, coworker, spouse, or other family member.

• Learn more about the Big Five by reading answers to commonly asked questions.
• Read our consent form, which explains the benefits of this free, anonymous test and your rights.
• There are no "right" or "wrong" answers, but note that you will not obtain meaningful results unless you answer the questions seriously.
• These results are being used in scientific research, so please try to give accurate answers.
• Your results will be displayed as soon as you submit your answers.

We recommend that you take the TWINS version of the Big Five study. If you are a Twin, or would like extended feedback in addition to Big Five results, you should take the TWINS version of this study. The TWINS version includes all the feedback that you would receive from this version, and also includes additional feedback on your personality and behaviors. The TWINS version also allows you to compare your personality to the personalities of your family and friends. Click HERE to take the TWINS Study

Portions of this test are copyright 2000 by U. C. Berkeley psychologist Oliver D. John, Ph.D.; all rights reserved. Remaining portions and website copyright 2000-2003 by Atof Inc.