There are 34 million adolescents between the ages of 11 and 17 years old in the United States. Approximately 12% of them are African American. These youths experience earlier pubertal onset and face earlier challenges to participate in sexual activity, and therefore have earlier potential for pregnancy and contraction of sexually transmitted diseases. Experts in adolescent research have recommended developing and implementing new interventions to reduce early sexual activity; these interventions should target middle school-aged youths. The purpose of this study is to evaluate the efficacy of the NIA intervention on intention to engage in early sexual behavior and actual involvement in early sexual behavior in a convenience sample of sixth and seventh grade African American girls.

NIA is a Swahili word that means "having a sense of purpose." It is one of the seven principles of Kwanzaa, a holiday that celebrates African Americans' cultural roots in Africa. The intervention was named after a self-development program for African American girls to highlight the intervention’s cultural basis.

The study will provide 12 weekly and 5 booster after school didactic sessions; these sessions will teach health promotion and decision making skills to help girls successfully avoid situations where sexual activity is invited. Mothers and daughters will collaborate on homework assignments on puberty, heterosexual relationships, and sexual issues. The study will provide an evening mother-daughter workshop on sexual responsibility and a "Baby-Think-It-Over" weekend experience for girls using a computerized doll. Finally, the study will provide five "Hey Baby!" role-play vignettes to teach girls how to avoid heterosexual relationships that may lead to sexual activity.

The NIA intervention will be compared against a usual after-school activity control group of sixth and seventh grade African American girls in two public middle schools in the Pittsburgh Public School system. Participants will be randomly assigned to either the NIA intervention group or the control group. Each participant will be in the study for 1 year. There will be a 12-week main intervention in the fall, a 5-week booster in the spring, and final testing 1 year after study entry. Assessments will be primarily paper and pencil tests of the study's main outcome variables: attitude toward early sexual behavior (ESB); subjective norms (mother, father, peer) toward ESB; intention to engage in ESB; and self-reported ESB. Additionally, there will be knowledge content quizzes after each main intervention or booster session and a written evaluation of the "Baby-Think-It-Over" weekend.