The purpose is to gather reliable data about media use of young American children (ages 0-8), and document how children's media environments and behaviors change over time. This data was gathered from large-scale, nationally representative, probability-based online surveys taken in 2013 and 2017. Parents of children ages 0 to 8 answered questions about the activities or content their children enjoy (e.g., watching videos, reading), their home media environment (e.g., which devices they have), attitudes towards their children's media and media use, and awareness of the American Academy of Pediatrics (AAP) recommendations. Demographic information includes the child's age, household income, parent education, race/ethnicity, gender, household size, and parent/caregiver employment status.