Adolescent

Adolescence is typically divided into three distinct sub-phases, each with unique milestones:

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.

Focuses on stabilizing identity, completing education, and entering the workforce. It is increasingly recognized as a "prolonged" phase in contemporary societies. The Adolescent Brain Adolescent Development - The Promise of Adolescence - NCBI