The idea of being “cool” may seem elusive to the chronically un-cool. A new international study shows 6 ways you can leave ...

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

Have you ever wanted to change your personality? Author Olga Khazan reveals the science and promise of personality change.

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

Personality tests like Myers-Briggs promise insight and self-discovery but often fall short of scientific reliability.

Today, psychopathic personality is measured using the 20-item psychopathy checklist, originally developed in the 1970s by Canadian psychologist Robert Hare for use in psychology experiments.

According to Dr. Katz, hostility is one of the key Type A traits that can be linked to medical conditions like coronary heart ...