what is the age range of an adolescent
The âAgesâ of Adolescents Adolescents are not just teenagers. Adolescents include 10-24 year-olds. Adolescence is not one developmental stage, but three developmental stages: â Early adolescence (10-14 years of age); â Middle adolescence (15-17 years of age); and â Late adolescence and young adults (18-24 years of age). Expert opinion about the age range for adolescence varies by organization and agency.