Part 04: Biological Origins of Personality and Individual Differences Chapter 29: Hormonal Influences on Personality and Individual Differences - Jennifer Guinn Sellers & Thanh Thanh L. Nguyen Chapter 30: Molecular Genetic Studies of Human Temperament - Kostas A. Papageorgiou & Vijeinika Vipulananthan Chapter 31: Digit Ratio and Personality and Individual Differences - John T. Manning & Bernhard Fink Chapter 32: Morningness-Eveningness and Sociosexuality from a Life-History Perspective - James Marvel-Coen, Coltan Scrivner, & Dario Maestripieri Chapter 33: Toward the Molecular Basis of Personality - Turhan Canli Part 05: Developmental Origins of Personality and Individual Differences Chapter 34: Individual Differences in Personal Narrative: Coherence, Autobiographical Reasoning, and Meaning Making - Theodore E. A. Waters & Christin Koeber Chapter 35: Developmental Profiles of Individuals with Psychopathic Traits: The Good, the Bad, and the Snake - Marie-Helene Cigna, Jean-Pierre Guay, & Nathalie M. G. Fontaine Chapter 36: Generational Changes in Self-Esteem and Narcissism - Eunike Wetzel, M. Brent Donnellan, Richard W. Robins, & Kali H. Trzesniewski Chapter 37: The Role of the Family in Personality Development - Ugo Pace & Alessia Passanisi Chapter 38: The Role of Peers in Personality Development - Julia Zimmermann & Anne K. Reitz Chapter 39: Personality Development in Adolescence and Young Adulthood - Theo A. Klimstra, Jeroen Borghuis, & Wiebke Bleidorn Chapter 40: The Development of Evolutionarily Adaptive Individual Differences: Children as Active Participants in Their Current and Future Survival - P. Douglas Sellers, II, Karin Machluf, & David F. Bjorklund Chapter 41: Cross-Situational Consistency, Variability, and the Behavioral Signature - Marc A. Fournier & D. S. Moskowitz Chapter 42: Transactions of Personality and the Social Environment During Development - Odilia M. Laceulle & Marcel A. G. van Aken Chapter 43: Personality Development in Adulthood - Marcus Mund, Julia Zimmermann, & Franz J. Neyer Chapter 44: Moral Character: Current Insights and Future Directions - Erik G. Helzer, R. Michael Furr, & Eranda Jayawickreme Part 06: Environmental Origins of Personality and Individual Differences Chapter 45: Cross-Cultural Perspectives on Personality and Individual Differences - Juri Allik & Anu Realo Chapter 46: Threat of Infectious Disease - Iris M. Wang, Nicholas M. Michalak, & Joshua M. Ackerman Chapter 47: Sex Ration Influences on Personality and Individual Differences - Daniel J. Kruger Chapter 48: Individualism and Collectivism - Takeshi Hamamura, Karim Bettache, & Yi Xu Chapter 49: Exploring Potential Causes of Individual Differences in the Expression of Neonatal Imitation - Siobhan Kennedy-Costantini & Mark Nielsen Chapter 50: Individual Differences and Romantic Relationships: Bidirectional Influences on Self and Relational Processes - Brent A. Mattingly, Kevin P. McIntyre, & Dylan Faulkner Selterman Chapter 51: The Gender Similarities Hypothesis - Jennifer L. Petersen Chapter 52: Positive Personality Change Following Adversity - Eranda Jayawickreme & Corinne E. Zachry Chapter 53: Self-Sacrifice for a Cause: A Review and an Integrative Model - Jocelyn J. Belanger, Birga M. Schumpe, Bhavna Menon, Joanna Conda Ng, & Noemie Nociti