The one-word stage is a crucial phase in language development where infants begin to use single words to express whole ideas or needs, typically occurring between 12 to 18 months of age. During this stage, children often use holophrases, which are single words that convey a complete thought, like 'milk' for requesting milk or 'up' for wanting to be lifted. This period marks a significant step in first language acquisition as children start to communicate meaningfully and engage with their environment.
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