TOKYO, Aug 26 - Among the nearly one-in-nine 14 and 15-year-olds who use their handheld device for at least four ...
Children who spend more than four hours a day on their mobile phones perform significantly worse on school tests than those who are limited to just 30 minutes, a Japanese government survey suggests.
TOKYO, Aug 26 - Among the nearly one-in-nine 14 and 15-year-olds who use their handheld device for at least four ...