On the day 2-year-old Isabel helped her father build bookshelves, she added the terms "board," "measuring tape," and "dowel" to her vocabulary after her first encounter with these objects. This is an example of:

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Fast mapping is the process in which a child hears a new word in a specific context and quickly connects the word to its meaning. This is evident in Isabel's case, as she added three new words to her vocabulary after her first encounter with these objects. A language acquisition device refers to Noam Chomsky's theory that there exists an innate biological ability for human beings to learn language. Telegraphic speech refers to the early stages of language development in which children only use a few essential words to convey a message. Linguistic relativity, or the Sapir-Whorf hypothesis, suggests that language influences the way we think and perceive our environment. None of the other options fully explain Isabel's situation.

On the Day 2-Year-Old Isabel Helped Her Father Build Bookshelves