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A sudden increase in an infant's vocabulary, especially in the number of nouns, that begins at about 18 months of age is called the name explosion.

The Name explosion refers to a phase of language development that typically takes place during a child's second year, at which time the rate at which new words are introduced to the child's productive vocabulary increases noticeably.

Most kids go through a "word spurt" (also known as a "naming explosion") sometime around the age of 18 months, which results in significant gains in their spoken vocabulary. Although this increase typically occurs in children between the ages of 18 and 24 months, it can sometimes happen in younger children.

The two linguistic theories are as follows:

  • The nativist theory contends that our brains are predisposed to acquiring languages from birth. Nativists hold that regardless of their surroundings, children are predisposed to learning languages.
  • The behaviorist theory contends that certain activities, such as imitation, lead to the development of language.

To know more about Name explosion refer to: https://brainly.com/question/15062664

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