Chapter 1: Family Quality of Life, Personal Well-Being, and Risk Behavior in Early Adolescents in Hong Kong: Related Phenomena and Research Gaps -- Chapter 2: A Longitudinal Study of the Personal Well-Being and Family Quality of Life among Chinese Adolescents in Hong Kong -- Chapter 3: Positive Youth Development in Junior Secondary School Students: Do gender and time matter? -- Chapter 4: Parental Behavioral Control, Parental Psychological Control and Parent-Child Relational Qualities: Relationships to Chinese Adolescent Risk Behavior -- Chapter 5: Perceived Family Quality of Life, School Competence and Academic Adjustment amongst Early Adolescents in Hong Kong -- Chapter 6: Subjective Well-being of Early Adolescents in Hong Kong -- Chapter 7: Development of Delinquent Behavior in Early Adolescents in Hong Kong -- Chapter 8: Substance Abuse in Junior Secondary School Students in Hong Kong -- Chapter 9: A Longitudinal Study on Deliberate Self-Harm and Suicidal Behaviors among Chinese Adolescents -- Chapter 10: Compensated Dating and Juvenile Prostitution in Early Adolescents in Hong Kong -- Chapter 11: Intention to Gamble Amongst Junior Secondary School Students In Hong Kong: Changes and Predictors -- Chapter 12: Promotion of Positive Youth Development and Family Quality of Life in Chinese Adolescents.