Great Rewiring and the dawn of the phone-based childhood seem to have added two to three hours of additional screen-based activity, on average, to a child’s day, compared with life before the smartphone. These numbers vary somewhat by social class (more use in lower-income families than in high-income families), race (more use in Black and Latino families than in white and Asian families[13]), and sexual minority status (more use among LGBTQ youth; see more detail in this endnote[14]).
