Children in the US spend a significant amount of time watching TV and using the internet daily. TV shows aimed at children contain much higher rates of violence than other programming. Heavy TV viewers report more distress and fears. Parental monitoring of TV and internet use is low. Exposure to media is linked to higher perceptions of threats, concerns about body image, and more aggressive behaviors in children, especially through modeling of behaviors seen in media. Different media formats have varying impacts on children's memory and learning.