This report is based on the results of a large-scale, nationally representative survey, the second in Common Sense Media’s series on children’s media use; the first was conducted in 2011 (Zero to Eight: Children’s Media Use in America). By replicating the methods used two years ago, we document how children’s media environments and behaviors have changed. We survey parents of children ages 0 to 8 in the U.S., and cover media ranging from books/reading and music to mobile interactive media like smartphones and tablets.