An individual’s genetics and their environment both shape their personality. However, opinions differ on the degree to which each of these factors influences personality, and how they contribute to ...

People love taking personality tests, but are personality types real? Maybe, and maybe not. Personality development is complicated, and most healthy personality types are not so easily defined. Your ...

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 ...

Personality often changes with age but not much is known about dark personality traits. A new study investigated the Dark Triad in more than 1,000 volunteers in different age groups. Narcissism stayed ...

Dr. Thomas answers the question: 'Personality Type & High Blood Pressure?' — -- Question: Is there a personality type that is predisposed to develop high blood pressure? Answer:There are ...

Despite being disproven, a common belief is that the personality you develop by your 20s is the one you’ll have your whole life. If you’re extroverted, you’ll stay that way forever, and if you tend to ...

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: ...

Are you a responsible oldest child, an overlooked middle, or a free-wheeling baby? For those who adhere to the theory that birth order influences personality, the answer to that question may hold the ...

A massive new study suggests that growing up in a society marked by corruption, inequality, poverty, and violence may influence how willing people are to behave selfishly—even if it comes at a cost to ...