This strength-based psychotherapy with adolescent girls and their families is derived from feminist psychology, positive psychology, and strength-based interventions with teens. Research reviewed by the American Psychological Association's Presidential Task Force on Adolescent Girls formed the basis of specific interventions within this approach. Research findings that contributed are the effects on teen girls of positive parental relationships; utilizing strengths of their race, ethnicity, class, and gender; positive body images: being outspoken in relationships; problem-solving skills that foster independence: and family support for independence. The strength-based approach is illustrated by a case example of a 13-year-old European American girl with acting-out behaviors, depression, and subclinical attention-deficit/hyperactivity disorder. The case illustrates how to empower adolescent girls within therapy, when and how to include parents, how to change the focus to strengths, and how to help the parents assess and build upon their daughters' strengths. (C) 2003 Wiley Periodicals, Inc.