age of adolescent
Adolescence is the stage or process of transition from puberty to maturity(18-20years). Adolescent is a person in this stage of development.this period witnesses physical ment…al and reproductive growth of the individual. Between the ages of 10 and 25, the brain undergoes changes that have important implications for behavior (see Cognitive development below). The brain reaches 90% of its adult size by the time a person is six years of age. Thus, the brain does not grow in size much during adolescence. During their peak height velocity (the time of most rapid growth), adolescents grow at a growth rate nearly identical to that of a toddler—about 4 inches (10.3 cm) a year for males and 3.5 inches (9 cm) for females. Approximately 7 percent of adolescents aged 10-19 are foreign-born, and 85 percent of those are not U.S. citizens. Roughly 250,000 adolescents are living in foster care in the U.S. Nearly 1 in 5 U.S. adolescents lives in poverty. Young people begin to have sex at about the same age in most industrialized countries.3 Adolescent sexual development is important for the process of identity formation and the establishment of romantic and social relationships among peers. Many adults are uncomfortable with the idea of teen sexuality, and prefer to remain in ignorance or denial. But in the United States, 46 percent of all high school age students, and 62 percent of high school seniors, have had sexual intercourse; almost nine million teens have already had sex. Adolescence (from Latin adolescere, meaning to grow up) is a transitional stage of physical and psychological development that generally occurs during the period from puberty to legal adulthood (age of majority). In some studies, youth may include children as young as age 10 through young adults as old as age 25. No single primary data source exists to capture all dimensions of adolescent sexual behavior. In many societies 14 year-olds undergo a rite of passage and then for most purposes are treated as adults. Adolescence is the awkward teenage period between childhood and the adult years (13 to 19 years of age).    Adolescence is the development of young kids. The stage starts  around puberty and last until adulthood. 16 people found this useful. The racial/ethnic mix of U.S. adolescents aged 10-19 includes White (76 percent), Black/African American (16 percent), Asian/Pacific Islander (5 percent), and American Indian/Native American (1 percent). Roughly 1 in 5 White, Black, or multi-racial adolescents also identifies as Hispanic/Latino.
10-19 years