Toddlers learn from overheard conversations at home
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Researchers from the University of Chicago, The New School for Social Research, and Princeton University studied how English-learning children in the United States learn words by listening to their parents talk.
The team examined whether children more easily recognized words their parents used when speaking directly to them versus words overheard from adult conversations. They assessed 79 children at 18, 24, and 30 months using parent surveys about object recognition.
The study revealed that 24- and 30-month-olds successfully recognized words commonly used in adult conversations, but 18-month-olds could not. However, 18-month-olds who had larger vocabularies at 24 months showed better recognition of overheard words and a smaller difference in recognition between overheard and directly-addressed words compared to peers with smaller vocabularies. The researchers found that toddlers begin learning from direct speech and then, around age two, start to understand conversations not intended for them.
These overheard conversations introduce words not typically used when speaking to young children, helping them learn the language used by adults. The team also noted the importance of natural, everyday language exposure, suggesting that even “messy” conversations offer valuable learning opportunities. They recommend future research focus on documenting the specific language children overhear and how it impacts their broader language development.
