This study will follow children from age 3 to 5 and examine their media use and language skills. Beyond how much media children use overall, data collection will include information about how much children use media with adults, how much children use interactive (apps/games) vs. noninteractive (TV/video) media, and how much children use educational media. These factors may influence the impact of media use on language development. A wide range of data sources will be used to capture a nuanced view of children’s media use. Further, information will be collected about a host of covariates that are likely to be linked to both media use and language development. This will allow for the identification of the unique relation between media use and children’s language development during this crucial time frame.