This study investigated age changes in risk perception and unrealistic
optimism. Teenagers (n = 376) and parents (n = 160) evaluated the ris
k of experimental, occasional, and regular involvement in 14 health-re
lated activities (e.g., getting drunk). Respondents also evaluated the
ir comparative chances of encountering the leading causes of morbidity
and mortality. Compared with adults, teenagers minimized the perceive
d risk of experimental and occasional involvement in health-threatenin
g activities. Notably, teenagers were less optimistic about avoiding i
njury and illness than were their parents, and teenagers at greatest r
isk for such misfortunes were the least optimistic about avoiding them
. These findings do not support traditional explanations of adolescent
risk taking. The implications of these findings for understanding and
preventing health-damaging behavior among adolescents are discussed.