The document presents an overview of theories of personality in psychology. It discusses early theories from phrenology and the four temperaments. It then covers Freud's structural model of the id, ego and superego. Jung focused on the collective unconscious. Bandura proposed reciprocal determinism. Locus of control ranges from internal to external. The Five Factor Model describes the Big Five personality traits. Personality is influenced by both genetics and environment. Modern theories seek to understand individual differences in personality.