Read sections 11.2 through 11.6 to learn about the various perspectives of personality development. Much emphasis is placed on Sigmund Freud's influential and deterministic theory which highlights sexual and aggressive drives. The next section discusses the Neo-Freudian approaches like that of Carl Jung who placed emphasis on the idea of a collective unconscious. Think about how these theories differ and build on each other as psychologists try to understand how personality is developed. The final part of this reading examines social situations and outside influences on our personality development. Can you relate to the work by Albert Bandura and Julian Rotter who coined the terms self efficacy and locus of control, respectively? This reading concludes with an examination of biological factors in personality development, specifically the similarities (and differences) in personality among identical and fraternal twins who were raised apart.