Unit 11: Language and Thought
What a sentence is actually made of, how a child builds a grammar no one taught them, and whether the language you speak shapes what you can think.
6 topics · 19 questions
Each topic is a path, not a menu: work down it in order and every question builds on the one above. Click any of them to watch the answer draw itself.
The Building Blocks of Language
- How it worksHow do phonemes combine into morphemes, morphemes into words, and words into sentences under the rules of syntax?
- How it worksHow does syntax let the same words in a different order completely change who did what to whom?
- Common mistakeWhy isn't language just a long list of memorized sentences stored and replayed?
Your turn1 of 2
A person understands a sentence they have never encountered before in their entire life, immediately and without effort. A student assumes this must mean the brain has somehow already stored every possible sentence in advance, ready to be recognized. How do phonemes, morphemes, words, and syntax actually combine to make understanding a brand-new sentence possible?How Children Acquire Language
- How it worksHow does overregularization show a child applying a grammar rule, like adding -ed, even to the words that break it?
- Common mistakeWhy isn't a child's fast vocabulary growth explained just by parents directly teaching every new word?
- Going furtherWhat happens to a child's grammar once they notice that goed doesn't match what adults around them actually say?
Your turn1 of 2
A toddler who correctly said 'I went' for months suddenly starts saying 'I goed' instead, seemingly getting worse at a word they had already mastered. A student assumes this must be a random error or a sign the child is simply forgetting things they once knew. What does overregularization actually show about how the child is learning grammar?The Critical Period for Language
- How it worksHow does the brain's declining plasticity after puberty make native-like grammar acquisition much harder?
- Worked exampleFind why children exposed to a language before about age 7 reach native fluency far more reliably than those first exposed after age 12.
- Common mistakeWhy isn't an adult's difficulty learning a new language simply a matter of not trying hard enough?
Your turn1 of 2
Research suggests second-language grammar proficiency, on a 100-point test, declines by roughly 1 point for each year past early childhood that first exposure to the language is delayed. A learner first exposed at age 8 scores about 88. Find the expected score for a learner first exposed 14 years later, all else equal.Universal Grammar
- How it worksHow does universal grammar propose that children are born with a template that any human language can fill in?
- Common mistakeWhy isn't the existence of thousands of different languages evidence against a shared underlying grammar?
- Ties togetherHow does universal grammar explain why children acquire language so much faster than they could by pure imitation alone?
Your turn1 of 2
Every human language, no matter how different it sounds, turns out to share certain deep grammatical building blocks, like structuring sentences around a subject and a verb. A student assumes children must simply be imitating whichever specific language they happen to hear around them, with no shared starting point across languages at all. How does universal grammar propose that children are born with a shared template?Language Shaping Thought
- How it worksHow does linguistic relativity propose that the categories a language provides can nudge, without controlling, how its speakers think?
- Going furtherWhat happens to color discrimination when a language, like Russian, has two separate basic words for light blue and dark blue?
- Common mistakeWhy isn't it true that a language lacking a word for a concept means its speakers can't think that concept at all?
Your turn1 of 2
Speakers of a language with two distinct basic words for light blue and dark blue sometimes distinguish those two shades slightly faster than speakers of a language with only one basic word for blue overall. A student assumes this must mean speakers without the extra word are literally incapable of perceiving the color difference at all. How does linguistic relativity propose that a language's categories can nudge, without controlling, how its speakers think?Broca's Area and Wernicke's Area
- How it worksHow does damage to Broca's area produce halting, ungrammatical speech while comprehension stays largely intact?
- Common mistakeWhy isn't Wernicke's aphasia the same disorder as Broca's aphasia, even though both are language deficits?
- Going furtherWhat happens to a person's speech when the damage sits in Wernicke's area instead of Broca's?
- Ties togetherHow does the split between Broca's and Wernicke's areas connect to the general idea that different brain regions handle different mental jobs?
Your turn1 of 2
A patient with damage to Broca's area speaks in slow, halting, grammatically broken phrases, yet can still understand nearly everything said to them. A student assumes damage anywhere in the brain's language system should equally disrupt both understanding and producing speech together. How does damage to Broca's area produce halting, ungrammatical speech while comprehension stays largely intact?