For 40 years, the Big Five personality model has dominated psychology, but new research suggests it may be incomplete.

Alexander Christensen's recent study probably won't rewrite 40 years of history in the field of psychology, but he hopes that ...

Are the Big Five really all that and a bag of chips? See how they stand up to criticisms of other personality tests.

Unlike Myers-Briggs, the Big Five personality test is quick and dirty (yet sufficiently introspective). We asked a pscyhologist to explain each trait.

Big Five Superiority: The Big Five personality test framework outperformed the other two frameworks that we tested—Jungian (MBTI-inspired) and Enneagram—in predicting life outcomes.

These include trait theories that focus on measurable traits, and psychodynamic theory that emphasis the role of unconscious thoughts and early childhood experiences in shaping personality.