: SAGE: infancy

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infancy

Infancy ranges in age from the moment of birth to about 2 years of age when the young child begins to use words to make sentences. In fact, the word “infant” means literally “one who is unable to speak.” Infancy is unique in that it is the earliest stage of life outside of the womb and is viewed as the most important formative period of development. [Source: Encyclopedia of Human Development; Infancy]

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