• Some adolescents are troubled and some get into trouble. But the great majority (almost nine out of ten) do not. . . . The bottomline is that good kids don't suddenly go bad in adolescence.

    Laurence Steinberg: Some adolescents are troubled and some get into trouble. But the great majority (almost nine out of ten) do not. . . . The bottomline is that good kids don't suddenly go bad in adolescence.