What Do Kids Actually Learn When They Speak?

TL;DR

Children rapidly learn language by acquiring 5 to 10 new words daily and mastering the complexities of grammar and word meanings through natural exposure. The debate continues between theories proposing innate language structures versus those emphasizing statistical learning, highlighting the differences in language acquisition between humans and animals.

Transcript

The following content is provided by MIT OpenCourseWare under a Creative Commons license. Additional information about our license and MIT OpenCourseWare in general is available at ocw.mit.edu. JEREMY WOLFE: In the last lecture, I was talking about the fact that people-- kids go through roughly the stages of language development-- they go through t... Read More

Key Insights

• 👶 Children acquire language through exposure to spoken language and natural interactions with others.
• 🔑 Word learning is a remarkable feat, as children acquire a large vocabulary by learning 5 to 10 words a day.
• 😒 Animals, such as chimpanzees and parrots, can learn to use signs or words to communicate but do not show the same level of grammar as humans.
• 🫵 Theories of language acquisition differ between the East Coast view (specific language structures in the brain) and the West Coast view (statistical learning and association).

Questions & Answers

Q: How do children acquire language?

Children acquire language through exposure and observation of spoken language. They learn words and grammar through natural interactions with others and by imitating what they hear.

Q: Can animals learn to communicate using human language?

Animals, such as chimpanzees and parrots, can be trained to use signs or words to communicate with humans. However, their language abilities are limited in comparison to humans, and they do not demonstrate the same level of grammar.

Q: What are closed-class words?

Closed-class words are grammatical words that serve a syntactical role in language, such as articles (the), conjunctions (and), and prepositions (in). They are a small set of words with limited meaning.

Q: How does the West Coast view differ from the East Coast view of language acquisition?

The West Coast (neural net) view suggests that language learning is the result of statistical learning and association, with no specific language structures in the brain. In contrast, the East Coast (MIT) view proposes that humans are born with an innate language structure that allows them to acquire language.

Summary & Key Takeaways

• Language acquisition in children is an incredible feat, as they learn 5 to 10 words a day between the ages of 1.5 and 6 years old without formal instruction.

• Children face the challenge of not only learning word meanings but also understanding grammar, including word order and verb tenses.

• There are two main theories on language acquisition: the East Coast (MIT) view that humans are born with a specific language structure in their brains, and the West Coast (neural net) view that language learning is a result of statistical learning and association.

• Animals, such as chimpanzees and parrots, can learn to use signs or words but do not demonstrate the same level of grammar as humans.