Background TV and toddler talk
By Adam Linmore · October 30, 2026
Background television is a screen that is on in the room while nobody is watching it, or while only an adult is: the news during breakfast, a show for company while you fold laundry, the set nobody turned off after dinner. It feels like it should not count, because the child is not looking at it. The research says it counts, and that it may cost the most of any screen in the house.
What the laboratory studies saw
In a set of American experiments, about 50 children aged one, two and three played in a laboratory room with a parent, sometimes with a television program for adults playing in the background and sometimes without. With the television on:
The children’s play was shorter and less focused, even though they looked at the screen only now and then.
The parents spoke about a fifth fewer words to their children.
Their answers were simpler and slower, and they used fewer new words.
These were single sessions in a laboratory, so they cannot say what happens over months. They show what happens in the room: a television that is talking takes the adult’s turns away, whether or not anyone is watching it.
What the home recordings heard
Small recorders that a child wears for a whole day count the words adults say near her, her own sounds and the back-and-forth turns between them. In an American study of 329 children aged two to forty-eight months, each hour of audible television in the home went with about 770 fewer adult words near the child, and with fewer child sounds and fewer turns. The recorder could not tell whether anyone was watching.
Fifteen years later, an Australian study with the same kind of recorder found that at three years, each minute of screen time went with about seven fewer adult words, fewer child vocalizations and fewer turns. At the study’s average screen time, that came to a projected 194 fewer back-and-forth turns a day.
The turns are the part that matters. In a study that recorded children at eighteen to twenty-four months, the number of turns predicted their language years later better than the number of words they heard. A baby who says “ba” and gets “Ball. You want the ball?” has learned that sounds do things. Words that are not part of a turn are, to a baby, mostly weather.
What the reviews found
A review that pooled 42 studies of more than 18,000 children found that more screen time, and especially more background television, went with weaker language, while watching together with a caregiver went with stronger language. A second review, of how children under six use screens, found the same shape for thinking and learning: background television and solo viewing went with poorer outcomes, and screen use shared with a caregiver went with better ones, with effects that were small to moderate.
Both reviews pool observational studies, which show a pattern and cannot prove a cause. They point the same way as the experiments and the recordings.
Why background TV may cost the most
It is the screen that is on the longest, because nobody decides to turn it on for a set time and nobody decides to turn it off. And adults talk less when a television is talking. Some national advice now names it: Norway’s first national advice, in 2025, includes no background television for young children, and Singapore’s 2025 guidance says no screens under eighteen months, including in the background, except video calls.
What this does not mean
It is not a verdict on anyone. A television on for company is often there because a parent is alone with a small child for many hours, and that is a real reason.
It does not mean every sound is a problem. Music in the room is not television in the room; it does not hold her face still. A story on a speaker for a three- or four-year-old while she builds is nearer to a book than to a screen. But a speaker that is always on becomes a kind of weather in the house too, and the turns still have to happen over it.
It does not prove cause. The recordings show associations; the laboratory studies show single afternoons.
What to do this week
Turn off what nobody is watching. That one change costs nothing and starts tonight.
Give screens a spot and a time. One place where they live, one time they come out. A screen with a spot can be put back; a screen that lives everywhere never really goes off.
Move the adults’ shows. After bedtime, or in another room with the door closed. Children notice a screen in the next room.
Fill the quiet with talk. Say what she is doing, in short sentences, then wait about five seconds for an answer of any kind: a look, a sound, a reach. Answer it.
Give sound a time too. Music for the dance in the kitchen, then off, so that the sound at dinner is the family’s voices.
Count it. If you keep a screen diary for your child’s doctor, count the television that is on while you cook, the phone playing songs in the car and the show that runs while you shower. Many families find the number is larger than they thought.
When to talk to your child’s doctor
If anything about your child’s talking, hearing or play worries you, or she has lost words or skills she had, talk with your child’s doctor now and ask for a hearing test first. Bring the diary. In the United States, if your child is under three, you can contact your state’s early-intervention program yourself, and the evaluation is free. “Virtual autism” is not a medical diagnosis; if that phrase brought you here, read what it means, and for the larger studies, screen time and toddler talk.
Sources: Schmidt et al. 2008; Kirkorian et al. 2009; Pempek, Kirkorian and Anderson 2014; Christakis et al. 2009; Brushe et al. 2024; Gilkerson et al. 2018; Madigan et al. 2020; Mallawaarachchi et al. 2024; Norwegian Directorate of Health 2025; Singapore Ministry of Health 2025. Full references are in chapters 4, 6, 15, 16, 19 and 23 of Virtual Autism; the sources page lists the key studies behind this site.
Want the full picture? Virtual Autism sets out the research, its limits and a practical plan for home.
General information, not medical advice. If you are worried about your child, talk to your child’s doctor.