Maternal elaboration and autonomy support during reminiscing facilitate middle-class children's autobiographical narrative skills. In this study, low-income Hispanic, White, and Black mothers' elaboration and autonomy support in reminiscing were examined in relation to children's joint and independent autobiographical narratives and engagement. Sixty preschool children discussed three past events with their mothers and one past event with a researcher. Maternal elaboration was related to children's joint and independent autobiographical narratives, and autonomy support was related to children's joint and independent engagement. Hispanic mothers used a less elaborative style during conversations about misbehavior, and Hispanic children tended to have less advanced independent autobiographical narratives. Maternal elaboration and autonomy support appear to play different roles in children's autobiographical narratives. Further, reminiscing may serve different purposes in different racial/ethnic groups. (Contains 6 tables.)