Nobody signs up to a book-sharing programme expecting it to change the way they talk to their teenager.

That is not the pitch. The pitch is simpler: sit with your young child, share a book, build their early language and literacy in the years that matter most. Zero to six. The science is clear, the need is urgent, and the method is disarmingly straightforward. A caregiver, a child, a book.

Dialogic book-sharing — the practice Mikhulu Trust has spent over a decade refining and researching — is grounded in thirty years of evidence showing that responsive interaction between a caregiver and a young child is one of the strongest predictors of early language and cognitive development. Research from the Harvard Center on the Developing Child confirms that these early exchanges literally build neural architecture. The case for starting early, and starting well, is unambiguous.

But something else is happening — something our partners in the field are seeing consistently enough that it can no longer be called a coincidence.

Parents who begin practising book-sharing with their toddlers are becoming better listeners. And that shift is not staying in the room with the toddler.

One of our partners recently did something simple: she sat down with parents at two different sites and asked them about their relationships with their children. Not just the little ones in the programme. All of their children.

What she heard was striking. Parent after parent said some version of the same thing — that before book-sharing, they had not really been listening. Not to the three-year-old, and not to the fifteen-year-old either. Relationships with older children had grown distant, sometimes strained. And when these parents were asked why, they pointed to the same absence: they had not been present in the way their children needed them to be.

Book-sharing had given them a practice. A reason to sit down, slow down, and pay attention to a small person in front of them. And somewhere in that practice, they had rediscovered something about what it means to be in a relationship with a child — any child.

Fathers are calling their teenagers back into conversation. Mothers are catching themselves actually hearing what their older children are saying, rather than waiting for their turn to speak. The programme targets the under-sixes. The ripple is reaching the whole family.

This is what those of us in the early childhood development sector sometimes call a spillover effect, but that phrase does not quite capture how significant it is. A spillover sounds accidental, incidental. What our partners are describing feels more like an awakening.

Responsive, present, relationship-centred caregiving — the core of what book-sharing teaches — turns out not to be age-specific. When a parent learns to tune in, they tune in more broadly. The skills transfer. The attention transfers. And in communities where the pressures of poverty, unemployment, and survival leave very little space for connection, that transfer matters enormously.

Research on parenting programmes consistently shows that improvements in caregiver sensitivity and responsiveness ripple outward — affecting the broader emotional climate of the home, not just the target child. A large-scale home-visiting study in Brazil found that effects on parental sensitivity were especially pronounced among low-income families, suggesting that responsive caregiving interventions carry the greatest transformative potential precisely where family stress is highest. Our partners are seeing exactly this play out in the field.

We often speak about early childhood development as an investment in the future. What our partners are showing us is that it is also an intervention in the present — in the quality of family relationships right now, across generations, in homes where a book has started something that nobody quite expected.

None of this is to suggest that book-sharing is a simple fix for the complex pressures facing South African families. The challenges are real and they are structural. Parents in under-resourced communities are stretched thin. Time is scarce. Trust takes time to build. Getting caregivers through the door of a parenting programme — and keeping them there — remains one of the hardest parts of this work.

But what the field is telling us is that when parents do arrive, and when they begin to engage, the impact is rarely limited to what we planned for. Mikhulu Trust’s vision has always been that parents are their young children’s first and best teachers. What our partners are now showing us is that becoming that kind of parent — present, curious, responsive — does not switch off when the toddler goes to bed and the teenager comes home. Children grow, yes. But parents grow too. And families — quietly, without announcement — begin to change.

A book opened in front of a toddler turns out to be an invitation to a different kind of presence. And presence, it seems, is something families across the age spectrum are hungry for.

Mikhulu Trust supports early literacy and caregiving through book-sharing programmes across South Africa. Voices from the Field is a series drawing on insights from our partner network working directly in communities.