In earlier studies, slightly younger children—24 months—struggled with these “seek and find” tasks after watching non-interactive video, unless they had a guide on-screen, a person or character, whom they felt compelled to respond to or communicate with. Even easier tasks, such as pointing to an object introduced a few minutes before, are more difficult for very young children after watching video compared with being taught face-to-face. It is this “video deficit,” which has cropped up in numerous other studies with infants and toddlers, that partially informed the American Academy of Pediatrics’ recommendation against screen time among children younger than 2. (The AAP has other concerns, too, such as whether parents are replacing human-to-human connections with screen time.) But the pediatricians who wrote the AAP guidance, which Farhad Manjoo has criticized in Slate for its narrowness, were focused only on what is typically called “passive” media, like TV and videos, not interactive media. Peer-reviewed research on under-2s using iPads has yet to appear.