This document discusses theories of personality including type theory, trait theory, psychoanalytic theory, and social learning theory. It also covers the key aspects that make up personality like the id, ego, superego, and the big five personality traits. Personality is shaped by both hereditary and environmental factors like family and social situations. Various theories are presented on personality development over the lifespan and the attributes that predict behavior in organizations. The importance of matching personality types to different jobs is also covered.