<qa>  What is the NIA intervention?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 studys 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. 