Forbes contributors publish independent expert analyses and insights. Mark Travers writes about the world of psychology. Personality tests are often treated as tools for diagnosis or self-improvement.

When we talk about our personality, many of us treat it as a fixed, unchanging part of us. But the truth is our personality can evolve and often does, even without us deliberately trying. For example, ...

Most clinicians still underestimate the degree to which genetic factors shape personality traits and personality development. This is not controversial within behavioral genetics, but it remains ...