American children and teenagers have increased their use of entertainment media by more than one hour a day in the last five years. On an average day they now spend seven and a half hours using media.

These are the findings of a new survey. It included devices like TVs, computers, mobile phones and MP3 players, but also media like books and magazines. It did notcount media use for school.

Vicky Rideout at the Kaiser Family Foundation, a health research group, wrote the report. She was surprised that kids could fit even more media time into their day.