A group randomized design tested a mother-daughter intervention aimed to increase protective factors in a community sample of Black, urban adolescent girls. Girls and their mothers at two community agencies were pretested and, by agency, randomized to either an intervention arm or to a control arm. Intervention arm girls and their mothers received a program for improving motherdaughter rapport. Posttest data collected 3 weeks after program delivery revealed that intervention arm mothers and daughters improved more than control arm mothers and daughters on measures of communication and closeness. At 3-month follow-up, intervention arm mothers relative to control arm mothers continued to report better communication with and closeness to their daughters. Girls and mothers in the intervention arm rated the computer program favorably on parameters of enjoyment, comfort, relevance, usefulness of information, improvements to their relationship with each other, and whether they would recommend it to friends.