Research into the effects of screen time on children's brains suggests the picture is more complicated than headlines often imply, with experts warning against simple conclusions.
Many parents hand a tablet or phone to a young child to keep them occupied, often while feeling uneasy about what the device might be doing to their development.
Studies have linked heavy screen use to poorer sleep, reduced physical activity and difficulties with attention, but the strength of those links varies widely. Researchers also point out that children develop in different ways, making it hard to draw conclusions that apply to everyone.
Researchers stress that what children watch or do on screens, and who they do it with, may matter as much as the number of hours.
“Screen time is not one thing; a video call with a grandparent and hours of autoplay are very different experiences.”
“Screen time is not one thing; a video call with a grandparent and hours of autoplay are very different experiences,” said one developmental psychologist.
Some studies have found benefits from educational content and interactive activities, particularly when parents talk with children about what they are seeing.
Experts also note that much of the research is observational, making it hard to separate the effects of screens from other factors in family life.
Paediatricians often advise families to focus on balance, making sure screen use does not replace sleep, physical play, reading or time spent talking together. Shared viewing and co-play are frequently recommended.
Health guidance in many countries recommends limiting screen use for very young children and keeping devices out of bedrooms at night.
Researchers say larger, longer-term studies are under way and should help parents make more informed choices in the years ahead.
