“Ericsson Mobility Report: 70 Percent of World’s Population Using Smartphones by 2020,” press release, June 3, 2015. .
7
Данные об использовании электронных средств коммуникации см. на .
8
“Americans Spend Nearly Half of Their Waking Hours (42 percent) Looking at a Screen, It’s Been Revealed by New Research,” press release, August 13, 2018. Исследование проведено OnePoll для CooperVision. .
