Apps used by children are often full of adverts. This is why it's a problem

Nov 12, 2018

A student from the General Yermolov Cadet School plays with her mobile phone during a two-day field exercise near the village of Sengileyevskoye, just outside the south Russian city of Stavropol April 13, 2014. The General Yermolov Cadet School in the southern Russian city of Stavropol is a state-run institution that teaches military and patriotic classes in addition to a normal syllabus. The school allows its pupils to take part in field-training trips, during which they spend time at a base and undergo physical drills and weapons training. The outings are seen as a treat for students, and those with bad grades are not allowed to go. The school is named after the Russian imperial general Alexei Yermolov and many of its students are from military backgrounds. Picture taken April 13, 2014. REUTERS/Eduard Korniyenko (RUSSIA - Tags: MILITARY EDUCATION SOCIETY)ATTENTION EDITORS: PICTURE 06 OF 35 FOR PACKAGE 'WEAPONS TRAINING FOR RUSSIA'S CADETS'. TO FIND ALL IMAGES SEARCH 'YERMOLOV KORNIYENKO' - GM1EA4M0SRI01

Children under 8 now spend about one hour a day using mobile devices. Image: REUTERS/Eduard Korniyenko

Jenny Anderson

Senior Correspondent, Quartz - Atlantic Media

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