Personality personality: an enduring pattern of thought, feeling, motivation, and behaviour that are expressed in different circumstances Psychodynamic Theories derived from Freud?s work focus is on unconscious mental forces Sigmund Freud?s Psychoanalytic Theory stated that all human behaviour is motivated by: sexual (libido - sex, sensuality) aggression (will to power, dominance) pros: emphasis on unconscious processes identification of defense mechanisms importance of childhood experiences in shaping adult personality cons: not solidly based on scientific observation (poor testability, lack of empirical evidence, etc.) excessive emphasis on sex and aggression The Psyche Id: instinctual drive present at birth bodily needs, wants, desires, impulses, sexual drive, aggressive drive