The story of Sybil, a young woman who was horrifically abused by her mother as a child, resulting in the creation of multiple personalities, caught the world by storm. Sybil was a bestselling book in ...

When you think about multiple personalities, what is the first thing that comes to your mind? For many, it is a disturbing picture from a Hollywood film about a deranged and sociopathic murderer.

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 ...