“Watching television while using another smart device is so common that over 60 percent of U.S. adults regularly engage in “media multitasking.” Compared to controls, media multitaskers have more trouble maintaining attention and a propensity to forget; their anterior cingulate cortex (a brain structure involved in directing attention) is physically smaller than controls’. Another study found that the more minutes children engaged in screen multitasking at age eighteen months, the worse their preschool cognition and the more behavioral problems they exhibited at four and six years. The authors advise positive parenting and avoidance of media screen multitasking before the age of two.8 ***”