MODEL RELEASED. Split personality. Abstract image of a woman's face depicting split" personality. Her face shows a happy expression at right, but an angry, aggressive expression at left. Split personality is also known as multiple personality disorder. It is a rare form of mental illness in which a person has two or more personalities, each dominating at different times. The personalities are usually completely different as in the story of Dr Jekyll and Mr Hyde. This image may otherwise depict schizophrenia, a state of deluded thinking in which reason and logic is distorted. Some schizophrenics also suffer from hallucination."