Girls typically show a higher incidence of internalizing symptoms of emotional development; boys typically show a higher incidence of externalizing symptoms. What factors might account for these gender differences? How might preoccupation with body image contribute to depression, eating disorders, or high-risk behavior for adolescent females? How might depression lead to high-risk behaviors (alcohol abuse, sexual risk taking, violence in adolescent males)? What characteristics of adolescence lead older adolescents to minimize the risks of binge drinking?