This study examined gender and racial differences in adolescents' risk perc
eptions of major diseases and motor vehicle injury and whether these percep
tions agree with national mortality rates and parental health history. Adol
escent (N = 135; 55% African-American) boys and girls reported on their cha
nces compared to other adolescents of developing specific diseases or exper
iencing a motor vehicle injury and their knowledge of parental health histo
ry. Logistic regression models revealed that girls' risk perceptions were s
imilar to boys' ratings even though females are at less risk than males per
national figures. Caucasian adolescents inaccurately perceived that they w
ere at significantly greater risk than African-American peers for motor veh
icle injury, stroke, cancer, and heart attack. Adolescents' knowledge of a
father's diabetes was predictive of greater perceived vulnerability to diab
etes.