l. Theoretical Foundations and Biological Bases of Development in Adolescence, 2. Cognitive and Moral Development and Academic Achievement in Adolescence, 3. The Development of Personality, Self, and Ego in Adolescence, 4. Adolescents and Their Families, 5. Risks and Problem Behaviors in Adolescence, 6. Social Interactions in Adolescence and Promoting Positive Social Contributions of Youth