The tonsils increase in size. Acne occurs for about 98 percent of all adolescents. Formal sex education reduces the likelihood of pregnancy. About half of all U.S. teens used a condom the last time they had intercourse. By the junior or senior year of high school, most adolescents prefer to be with members of the opposite sex.
Teens are more likely than people of other ages to commit suicide.
In adulthood, chronological age and the aging process are highly correlated. Adult cognition is closely tied to chronological age. At one stage in the development of faith, the young adult questions the authority of parents and teachers and makes commitments to a life goal or philosophy. The United States has the highest divorce rate of any large nation. Answer Key 1.