Infants often communicate with protophones, which are sounds resembling squeals, growls or short word-like noises such as “da,” “aga” and “ba.” These are considered the foundations of speech, as they eventually evolve into full language.

Objects play an important role in this process, as the more vocalisation an object encourages, the closer a young child is to talking.

A new study, led by the University of Portsmouth, has looked at the relationship between protophones and things typically found at home to assess their importance for developing language skills.

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