Most people think of personality traits as set in stone. We consider them to be as fixed as our eye color. For example, you might tell yourself, “I’m just a perfectionist,” or “I’m the type of person ...

People who live longer, happier lives tend to have some commonalities: strong social connections, healthier diets, a positive attitude. They also have high levels of a specific personality trait: ...

Loneliness is often imagined as something visible and dramatic, but psychologists say the reality is far more nuanced. Many adults who have spent long stretches of their lives feeling alone develop ...