Genetic factors account for much of the variation in personality traits across the lifespan. Shared upbringing plays a ...

Forbes contributors publish independent expert analyses and insights. Mike Kappel is the Founder of Patriot Software, LLC. Every person has their own unique personality. It’s what makes us who we are.

Almost by definition, personality traits are thought to be enduring psychological features. They mark someone as thinking and behaving in a characteristic way right now—and, probably, tomorrow and ...

Some people believe personality is fixed, but more recent research suggests that personality may develop over time and that people’s personality traits can change. Personality types group people into ...