Paediatrician Dr. Michael Rich, founder of the Digital Wellness Lab at Boston Children's Hospital, argues that the screen-time debate has been asking the wrong question, and this article explains the one he asks instead.
Dr. Michael Rich is a paediatrician, and the founder and director of the Digital Wellness Lab at Boston Children's Hospital. He is widely known as "the Mediatrician", a nickname that captures his unusual position in this debate: a children's doctor whose specialism is media itself. Where most voices on screens come from the technology world or the anxiety industry, Rich comes from the consulting room, where parents arrive with real bedtime battles and need answers that work on a Tuesday evening rather than in a laboratory.
That clinical grounding shapes his whole approach. He is not a prohibitionist, and the Digital Wellness Lab is not an anti-screen organisation. Its working assumption is that children are growing up in a media-saturated world, and that the useful job is to understand how media use affects health and development, and to help families manage it well rather than fight a war they cannot win.
Rich's central insight sounds almost too simple when you first hear it: the most useful question about a child's screen use is not how many minutes it lasts, but what those minutes displace. A minute counter tells you nothing on its own. Thirty minutes of video calling a grandparent and thirty minutes of autoplay cartoons at 9pm register identically on a clock and do entirely different things to a child's day. What matters, on Rich's account, is the activity that did not happen because the screen was on.
And the casualties of displacement are not random. They cluster around three things developmental science considers close to non-negotiable for young children: sleep, physical play, and face-to-face interaction. These are the activities most likely to be quietly eaten by screen use, and the ones young brains and bodies most depend on. A child who watches an hour of television but still sleeps fully, runs about and talks at length with the people who love them has paid very little for that hour. A child whose viewing shaves half an hour off sleep and substitutes a feed for a conversation is paying a real price, even if the total minutes look modest. The work of the Digital Wellness Lab at Boston Children's Hospital is built around exactly this reframing: away from raw exposure, towards what media use is doing to the rest of a child's life.
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From this follows Rich's most practical idea: families should think about media the way they think about food. Nobody manages a child's eating by counting total grams per day; we think in terms of a diet. What are they taking in, in what proportions, at what times, and what is it crowding out? A healthy media diet works the same way. Some content is nourishing, some is empty, and timing matters: the programme that is harmless at 4pm can cost a child sleep at 8pm. The analogy also carries a quiet reassurance. We do not aim for nutritional perfection, we aim for a sensible pattern with room for the occasional treat, and that is precisely the standard Rich suggests for screens.
For the parent of a child under five, the first implication is a release from minute-counting guilt. Rich's framework replaces "we did ninety minutes today and the guideline says sixty" with a better question: what would those ninety minutes otherwise have held? If the answer is "nothing much, and she slept well, played hard and chattered all day", the day was probably fine. If the answer is "the bedtime story, the garden, and most of our conversation", then the minutes are not the problem; the displacement is.
The second implication is that the three protected categories deserve to be guarded by name. Sleep, physical play and face-to-face interaction are the things to schedule first and defend hardest, the way a sensible eater plans meals before snacks; screens then fill some of what remains, rather than the other way round. For an under-5 this is especially pointed: sleep is when young brains consolidate, physical play is how bodies and senses calibrate, and back-and-forth interaction with a responsive adult is the single best-evidenced engine of early language.
An honest caveat belongs here. Much of the displacement research is observational: heavy media use and reduced sleep, play and conversation travel together, and the studies cannot always untangle which causes which. But Rich's question survives that caveat intact, because it asks you to audit your own household rather than trust a population average. You do not need a randomised trial to notice what the tablet is replacing in your own kitchen.
Run the displacement audit on a normal family day and you find the screen is not everywhere. It concentrates in a handful of predictable, high-pressure pockets: the dinner-prep hour, when an adult needs two hands and twenty minutes; the car; and the wind-down before bed. The fix, in the spirit of Rich's media diet, is not to ban anything. It is to make sure those pockets already contain something better, so the screen never gets asked in the first place.
This is where old-fashioned toys earn their keep, because they were designed for exactly these gaps. For the dinner-prep hour, a low kitchen drawer or basket that belongs to the child: a stack of beech blocks with their cool weight and sharp corners, a wooden threading toy, a simple shape sorter. The child plays on the floor at your feet, the clatter of wood on tile telling you where they are without looking. A basket of traditional wooden toys that live where the pressure points are → does more for a family's media diet than any amount of resolve summoned at 5.45pm with a saucepan in each hand.
For the wind-down hour, the same logic at a gentler tempo. The click of dominoes being turned and matched, a slow tower built and rebuilt, the first short games of snap or snakes and ladders where the real lesson is taking turns: these run at the pace a small body needs to descend towards sleep, where a screen runs at the pace designed to prevent it. A shelf of first family games made for the slow hour before bed → protects the most fragile of Rich's three categories, sleep, while feeding the other two, because a board game is face-to-face interaction by construction. At Jaques London we have been making games on this principle since 1795, longer than any other games company in the world; we gave Britain croquet in 1851 and created the Staunton chess set in 1849, and every one assumes what the Digital Wellness Lab assumes: that a child's evening is better spent across a table from someone than alone with a feed.
A parent does not need to do this perfectly. The food analogy holds to the end: stock the cupboard with good things, put them at child height in the hungry hours, and let the defaults do the work.
The Digital Wellness Lab publishes family-facing guidance alongside its research, and is worth a browse for any parent who wants the evidence without the alarm. For the wider picture, our screen time guide turns the media-diet idea into age-by-age suggestions, our practical guide to reducing toddler screen time works through the high-risk hours one by one, and the science of play sets out why sleep, movement and conversation earn their protected status.
They matter as a rough guardrail, not as the measure of success. Minutes are a poor proxy for what actually affects a child: a little screen use at the wrong time can cost sleep, while more that displaces nothing important costs little. Keep an eye on totals if it helps, but audit displacement first: is the screen eating sleep, physical play or conversation? Those three are the real limits.
Think proportions and timing, the way you would with food. The bulk of the day is the staples: sleep, active play, and time talking and playing with people. Screen use is the smaller portion, chosen rather than ambient, better shared than solo, and kept well away from the hour before bed. As with eating, the occasional indulgent day does no lasting harm; it is the sustained pattern that counts.
Meaningfully so, because it converts some of the cost into benefit. Solo viewing displaces face-to-face interaction; watching together and talking about what you see restores some of it, making the screen a shared object of conversation rather than a substitute for one. It does not cancel the other costs, a late co-watch still costs sleep, but it is one of the better ways to spend the screen minutes a family was going to spend anyway.
Take one ordinary day and write down when the screen went on, for how long, and what would plausibly have filled that slot a generation ago. Most families find the screen clusters in two or three pressure points: cooking, the car, wind-down. Then change the environment, not the child: put a basket of blocks, a puzzle or a simple game physically in those spots, at child height, and let the easier-to-reach option win. Repeat the audit a fortnight later and compare.
Britain's oldest toy maker. Every toy open-ended, wooden, and built for exactly the kind of play the research recommends.