teenhealthconnection

http://www.teenhealthconnection.org/adolescent.htm

ADOLESCENT DEVELOPMENT

Adolescence, the years between puberty and adulthood, can be divided into three stages: early adolescence (generally ages 12-13); middle adolescence (ages 14-16), and late adolescence (ages 17-21). In addition to physical changes, adolescents also experience seven key intellectual, psychological and social developmental tasks.