TEXTO 1
According to the Education Policy Institute (EPI) study, more than one-third of the UK's 15-year-olds are classed as "extreme internet users".
This is defined as someone who uses the internet for the equivalent of their whole evening online - more than six hours outside school on a typical weekend day.
This would include time spent on homework, watching television online as well as time spent on social networks and playing online games. It is higher than the EU average.
An Office of National Statistics study quoted in the research suggests that more than half of 10 to 15- year-olds (56%) spend three hours or more on social media on a normal school day.
However, a third of UK children of the same age spent no time on social media during a school day, according to the study from 2013-14.
The report said concerns were frequently raised about the potential effect on young people spending a great deal of time online.
And according to research from Ofcom in 2016, quoted in the study, it led to nearly eight in 10 (78%) young people (aged 16 to 24) being told off for doing this.
Seven out of 10 said they had missed out on sleep because of their online habits and 60% said they had neglected school work as a result.
And 59% of those questioned by Ofcom said they felt they spent too much time on the internet, with a quarter saying they felt nervous or anxious when offline.
The EPI research highlighted that those spending large amounts of time on social networking sites were more likely to have symptoms of mental ill health, and that excessive internet use has been linked with depression.
The report, written by the EPI's Director of Mental Health, Emily Frith, said: "We are not saying there shouldn't be any restrictions, that's up to the individual parents.
"What we do need to do is ensure young people build up their digital skills, such as blocking someone who may be causing you distress or looking after your privacy settings.
"And then there's the whole emotional side," she added.
Disponível em: http://www.bbc.com/news/education-40443509. Adaptado.
What does “extreme internet users” mean?
