Characterized by a shift in focus toward peer groups and romantic interests. This stage often involves increased conflict with parents as the teen seeks independence.
Approximately 1.3 billion people—roughly one in six people worldwide—are adolescents. adolescent
Major causes of death and injury include road accidents, suicide, and interpersonal violence. Stages of Development Characterized by a shift in focus toward peer
Generally 10–19 years, though developmental changes continue until approximately 24–25 years. each with unique milestones:
The onset of puberty, which triggers rapid physical and hormonal changes.
Adolescence is typically divided into three distinct sub-phases, each with unique milestones: