Increasingly, children spend much of their day in the care of adults other than their parents, such as child care providers. Consequently, it is important to analyze nonparental adults' use of strategies suggested to foster language development, such as contingent responsiveness, during interactions with young children. This study examined child caregivers' contingent responsiveness behaviors that followed toddlers' communicative attempts within unstructured, semistructured, and structured daycare contexts. Child caregiver behaviors were coded as (a) no response (appropriate), (b) no response (inappropriate), (c) noncontingent response (appropriate), (d) noncontingent response (inappropriate), (e) contingent response and termination of the interaction (appropriate), (f) contingent response and termination of the interaction (inappropriate), and (g) contingent response leading to maintenance of the communicative interaction. Important similarities and differences in child caregivers' contingent responsiveness behaviors for the three contexts suggest a need to prepare child caregivers to use strategies such as contingent responsiveness across contexts to facilitate language development. (author abstract)