Brief personality test consisting of four items. Each item is a dichotomy where the user chooses one side over the other. Administered in approximately five-minutes.
Fifty-two-item personality test based on trait theory. This test is called the Big 5 Personality Test, and consists of responding to items both about ones self and another person.
Personality test that includes professional scoring and interpretation. Information is also available regarding the evolution of the test and how to improve mental health.
Personality test based on Myers-Briggs Type Indicator (MBTI). Test is self-scored, and profile descriptions are available at the end of the test.
The IPIP-NEO
(http://cac.psu.edu/~j5j/test/ipipneo1.htm)
Excellent resource for The IPIP-NEO (International Personality Item Pool Representation of the NEO PI-R) Big 5 Personality Test. Test is 300 items and takes approximately 4060 minutes to complete.