Paediatric surgeon Dr. Dana Suskind restored hearing to hundreds of children, then realised the operation was only half the story: this article looks at what she learned about language, and how her Three Ts turn ordinary moments at home into brain-building ones.
Dr. Dana Suskind is a paediatric cochlear implant surgeon at the University of Chicago. Her job, in plain terms, is to give deaf children access to sound: a device is surgically placed that allows a child who could not hear to begin hearing. For a surgeon, it would be easy to treat the operation as the finish line.
Suskind did not, because her own results would not let her. She noticed something that changed the direction of her career: children who received essentially identical implants went on to have strikingly different outcomes. Some learned to listen and speak and thrived; others, with the same technology working just as well in their heads, lagged far behind. The difference was not the surgery. It was what happened afterwards, at home, in the everyday language environment surrounding each child.
That observation pulled her out of the operating theatre and into early childhood science. She founded the TMW Center for Early Learning + Public Health at the University of Chicago and wrote the book Thirty Million Words, both devoted to a single idea: the most powerful tool for building a young child's brain is already in every home. It is the sound of a parent talking with their child.
Suskind's core claim is beautifully simple: parent talk is the child's first and best brain food. In the earliest years, a child's brain is wiring itself at extraordinary speed, and the raw material it wires itself with is experience. For language, that experience is conversation: the words a child hears, and crucially the words a child gets to exchange, with the adults who love them. A cochlear implant can open the ear, but only a rich language environment can teach the brain what to do with what comes in. Her surgical patients made this visible in the starkest way possible: same device, same access to sound, different homes, different outcomes.
Out of this insight she built a framework any parent can hold in one hand: the Three Ts. Tune in: notice what your child is paying attention to, and follow their focus rather than dragging them to yours. Talk more: narrate, describe, wonder aloud, put words on the things your child is looking at and doing. Take turns: treat your child as a conversation partner from the very beginning, leaving space for them to respond, whether that response is a babble, a gesture or a full sentence. The genius of the framework is that it requires no equipment, no curriculum and no extra hour in the day. It turns moments you were going to have anyway, the nappy change, the walk to the shops, the tower of blocks on the kitchen table, into language-building ones.
The work of the TMW Center for Early Learning + Public Health takes this from a clinical observation to a public health mission: if early language environments shape early brains, then helping parents understand their own power is one of the highest-leverage things a society can do for its youngest children.
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The first implication is reassuring: you are not waiting for school to start your child's education. It started the day you brought them home, and you are the teacher. Every time you tune in to what your toddler is fascinated by and put words on it, you are doing the work. No app, no flashcard set and no subscription does this better than an attentive adult.
The second implication is about quality, not performance. Talking more does not mean delivering lectures or drilling vocabulary at a bewildered two-year-old. The talk that builds brains is responsive talk: it follows the child's attention and leaves room for them to take their turn. A back-and-forth about a worm on the pavement beats a one-way recitation of the alphabet, because conversation is a duet, not a broadcast.
It is honest to say where the limits of the evidence sit. Suskind's starting point was an observation among her own patients, and family language environments are tangled up with many other things that vary between homes. Nobody serious claims that word counts alone determine a child's future, and Suskind herself frames the message as empowering rather than judging: the point is not that some parents have failed, it is that all parents hold an underused tool. What the evidence does support, strongly and consistently, is that children given rich, warm, turn-taking conversation get a better start in language than children left mostly in silence or in front of a screen that talks at them rather than with them.
Here is what Suskind's framework looks like on an ordinary Tuesday. Your two-year-old has tipped a box of wooden blocks onto the kitchen table and is stacking them with the total absorption only toddlers manage. Tune in: you sit down, and instead of redirecting her to something you had planned, you watch what she is actually doing. She is putting the big beech cube on top of the small one, and the tower keeps toppling. Talk more: you put words on it. Heavy. Wobbly. The big one is on top, look, it fell again. Take turns: you slide a block towards her and wait. She picks it up, bangs it down, looks at you. That look is her turn. You answer it.
Nothing about this is fancy, and that is the point. But notice what the toy is doing in the scene. A simple wooden block has weight a small hand can feel, an edge, a smell, a satisfying clack as it lands. It does nothing on its own: no lights, no jingle, no recorded voice filling the silence where the child's own thinking should go. A toy that stays quiet leaves all the talking to the two of you, which is exactly where Suskind says the brain-building happens. This is why traditional wooden toys are such natural partners for the Three Ts: they generate things worth talking about without ever talking over you.
The same logic runs through counting frames, shape sorters and first puzzles. A child posting shapes through a sorter creates a stream of tiny conversational openings: which one is next, will it fit, where did it go. Good educational toys are not the ones that teach by themselves; they are the ones that give a parent and child something concrete to take turns over. Jaques London has been making playthings on this principle since 1795, longer than any other games company in the world, and the oldest lesson in the workshop is still the truest one: the toy is the prop, the conversation is the play.
The best place to explore Suskind's work is the TMW Center for Early Learning + Public Health, which carries the research and practical programmes built around the Three Ts. On this site, you can see how her insight fits the wider evidence in the science of play, read why hands-on play beats passive watching in why real play matters, and find practical steps in our guide to reducing toddler screen time.
Tune in, talk more, take turns. Tune in means noticing what your child is focused on and joining them there. Talk more means putting rich, descriptive words on what they are seeing and doing. Take turns means treating every exchange as a conversation, pausing so your child can answer with a babble, a gesture or a word. Together they turn everyday moments into language-building ones, no equipment required.
Yes, and this is the heart of Suskind's message. Long before a child produces words, their brain is busy learning the patterns, sounds and rhythms of language from what they hear, and from the turn-taking dance of attention between them and you. A baby's coo or glance is their turn in the conversation; responding to it teaches them that their voice has power. The talking you do in the first year is investment, not performance.
Not in the way a person can. Suskind's framework depends on tuning in to the child's attention and taking turns, and a screen or a chattering electronic toy does neither: it talks at a child, on its own schedule, with no idea what the child is actually looking at. Background noise is not brain food. A quiet toy and a responsive adult will do more for language than any amount of recorded speech.
No. The early years are a period of remarkable opportunity, not a trapdoor that slams shut. Suskind's message to parents is deliberately empowering rather than guilt-laden: the tool is free, it is already in your possession, and it works from the moment you start using it. Sit down at the kitchen table today, follow your child's attention, put words on what you see, and wait for their turn. That is the whole method.
Britain's oldest toy maker. Every toy open-ended, wooden, and built for exactly the kind of play the research recommends.