Sigman is concerned less with a child’s ICT or Computer Science study or use of computers for homework, but more with their screen time in non-educational environments in front of entertainment screen media such as television, the internet and computer games. He has some strong recommendations for reducing children's screen time, from toddlers to teenagers – and adults, too.
Obviously he is less worried by educational television programmes and even some educational computer games or mobile apps, but still recommends strictly limiting all screen time for kids.