This project is funded by an Incubator Award from the Centre for Research on Brain, Language and Music (CRBLM). The early years are a critically important period in language acquisition. Infants’ and toddlers’ language exposure and interactions, which predominantly occur in the family context at this age, are foundational to successful development. However, in families who use two or more languages, children’s language environments and their acquisition achievements are highly variable and complex. Many parents have questions and concerns about how to best support their bi-/multilingual infants and toddlers, but unfortunately science has so far provided few empirically-supported answers. This project will provide information on how families define and shape the language environment of their infants and toddlers to foster acquisition of more than one language. As key stakeholders in this context, we will gather information on parents’ perspectives to understand their language attitudes, practices, and questions following a two- stage plan. Our focus will be Québec-based families across a full range of bi- and multilingual language configurations: English-French, English-Other, French-Other, and English-French-Other. In Stage 1, we will conduct small focus groups and interviews to identify critical themes in parents’ attitudes, knowledge, practices, and questions, using open-ended questions and discussions. In Stage 2, the focus group findings will be used to create an internet survey to reach a much larger sample of parents. Our findings will be foundational for developing research programs and public policies that are more tightly linked to parents’ real-world experiences of raising bi- /multilingual infants and toddlers.