Reading Aloud to Infants and Toddlers: What the Research Shows Before Age Three

Why the First Three Years Matter More Than Most Parents Know

Most conversations about reading aloud to children focus on the preschool and school years — the period from age three or four onward, when children can sit with attention, respond to stories, and show visible signs of engagement with narrative. This is appropriate but incomplete, because the developmental evidence suggests that the years before age three are, if anything, more important for the foundational language development that reading aloud supports.

The first three years of life are characterised by an extraordinary pace of language development. Children move from pre-linguistic vocalisations to first words (typically around 12 months), to two-word combinations (typically around 18-24 months), to the rapid vocabulary growth known as the 'vocabulary explosion' that most children experience in their second and third years. The neural architecture for language — the patterns of connectivity in the brain that support language processing — is being established at high speed during this period, with sensitivity to language input that diminishes, though does not disappear, after approximately age five to seven.

Shared book reading during this period provides a specific kind of language input that everyday speech does not: as documented by Cunningham and Stanovich (1998) and the broad vocabulary exposure literature, children's books contain a density of sophisticated vocabulary that is substantially higher than conversational speech. Even simple board books for infants — whose text may be only a few words per page — provide vocabulary exposure in a specific multimodal context (image + text + parent voice) that supports word learning in ways that conversation alone does not.

What the Research Shows About Reading to Infants and Toddlers

The specific research base on shared reading with infants (0-12 months) is smaller than for older children, partly because infant book engagement is harder to measure and partly because infants cannot participate in the comprehension assessments used for older children. However, the available evidence is consistently positive.

A foundational study by DeBaryshe (1993), examining reading interactions between mothers and infants from age 12 months to 36 months, found that the frequency and quality of shared reading interactions at 12 months predicted vocabulary at 24 months, and that vocabulary at 24 months predicted later school readiness. The early reading interactions were not producing this effect through the books' content — infants at 12 months are not comprehending narratives — but through the quality of the interaction itself: the parent's verbal behaviour, the attention to the child's focus, the responsive conversation around the images.

The Reach Out and Read programme in the United States — an intervention that provides books and reading guidance to low-income families through paediatric healthcare visits — has been evaluated in multiple studies and found to produce significant increases in shared reading frequency and quality, with associated improvements in vocabulary and language development. The programme's logic — that providing books and guidance to parents at the point of paediatric care is an efficient way to reach families who might not otherwise engage in shared reading — has been adopted in several adaptations internationally.

In India, the Indian Academy of Pediatrics has increasingly incorporated developmental surveillance into routine paediatric practice, though specific guidance on shared reading is less well established than in some other countries. Parents seeking guidance on developmental reading practices for infants and toddlers should consult their paediatrician and the resources maintained by the Indian Academy of Pediatrics.

What Indian Parents Can Actually Do With Very Young Children

Practical guidance for shared reading with infants and toddlers is different from guidance for older children — the reading interaction looks quite different, and the benefits come from different aspects of the experience.

With infants (0-6 months): the primary benefit is not from the text but from the shared attention, the parent's voice, and the multisensory experience of being held while hearing language. Simple books with high-contrast images or photographs of faces attract infant attention most reliably at this stage. The 'reading' at this stage is often narrating — talking to the baby about the images, in the home language, with a warm and attentive tone — rather than reading text aloud. The text is almost incidental; the interaction is everything.

With young toddlers (6-18 months): board books with simple, bold images and minimal text work well. At this stage, babies begin to show preferences — reaching for specific books, patting images they recognise, making sounds in response to favourite pages. These responses are the first signs of book engagement and should be met with enthusiasm and repetition. Repeated reading of the same book is highly valuable at this age: repeated exposure to the same language in the same visual context builds the associations that support word learning.

With toddlers (18-36 months): the shared reading interaction becomes increasingly interactive. Children at this stage point at images, demand repetition, attempt to predict what comes next, and begin asking the questions ('what's that?') that indicate word learning in progress. The parent's role is to follow the child's lead — to respond to the child's attention and questions rather than to 'read through' the book from beginning to end. A five-minute book session that gets through three pages because the child keeps returning to the same image is more valuable than a session that 'completes' the book in two minutes of uninterrupted parent narration.

For Indian families who read in regional languages: reading to infants and toddlers in the home language is the highest-value option. The vocabulary and narrative exposure that shared reading provides is most effective when it occurs in the language the child knows best — and for very young children, the home language is always that language, regardless of what the school language will later be.

The Read Aloud Project's work supports read-aloud practice across the full age range — from infancy through secondary school. For more, visit https://www.anhayafoundation.com/the-read-aloud-project.

Sources

DeBaryshe, B. D. (1993). Joint picture-book reading correlates of early oral language skill. Journal of Child Language, 20(2), 455–461.

Cunningham, A. E., & Stanovich, K. E. (1998). What reading does for the mind. American Educator, 22(1-2), 8–15.

Reach Out and Read: reachoutandread.org — the US-based programme that has developed and evaluated the model of providing books and guidance through paediatric visits.

Note: The developmental milestones described (first words at approximately 12 months, vocabulary explosion in the second-third year) are broadly supported in the developmental psychology literature but show significant individual variation. Parents should use these as general frames of reference rather than precise benchmarks. The claim about the Indian Academy of Pediatrics is accurate in general terms; parents should consult the IAPediatrics website (iapindia.org) for current developmental guidance.