Prevention programs should empower children to identify and resist the advances of adults. Programs should try to minimize the guilt felt by victimized children who have not disclosed the abuse by teaching children that not telling someone about their abuse is not their fault and that many children need to think for a while before being ready to tell someone. Professionals also need to identify the verbal and nonverbal clues indicating that a child is experiencing a stressful reaction to the prevention materials and that the reaction may point to victimization. Instructions focus on selecting age-appropriate materials and materials for developmentally or physically disabled children, selecting and training presenters, and evaluating the program's positive and negative effects and the retention of content.