Personality has been defined as a way an individual thinks, acts, feels, and the way the individual perceives the world. Psychology which is the study of human behavior needs an understanding on how personality is formed and how it may operate. Human behavior has to do with a lot of different aspects in a persons’ life. For instance, childhood abuse, domestic violence, and trauma in an individual’s life, and also culture. Personologist are social scientists or psychologists who study theoretical systems for understanding human behavior.