 715 participants, ages 15-21, were recruited and enrolled at a large urban county health department, a teen clinic in a public hospital and a reproductive health clinic in the Atlanta area. After a computer interview assessing adolescents sexual risk and preventive behaviors, and STD testing Chlamydia and gonorrhea, participants were randomized to one of 2 conditions: the HORIZONS Intervention or the Standard-of-care counseling group. Two trained female health educators lead the 2-session HORIZONS intervention which addressed gender and ethnic pride issues, STDHIV knowledge, assertive partner communication and refusal skills, and role-play practice. Social Cognitive Theory SCT and the Theory of Gender and Power were complementary theoretical frameworks guiding the design and implementation of the HIV intervention. To supplement this group intervention, four phone contacts delivered by the original health educator were conducted during the follow-up period. The supplemental contacts reinforced workshop materials with an individually tailored plan for each participant. The control group received tracking calls only. Follow-up assessments identical to the baseline were conducted at 6 and 12-months post-randomization. 