This English Language Acquisition section of the LET English Major exam covers 9 expert-reviewed practice questions. Each question has a plain-English explanation and notes on why the wrong answers are wrong.
Sample 1
This theory explains how learners acquire language through exposure to comprehensible input.
- A Krashen's Input Hypothesis✓
- B Chomsky's Universal Grammar
- C Skinner's Behaviorism
- D Vygotsky's Sociocultural Theory
Answer: A
Stephen Krashen said we learn languages best when we hear or read messages that are slightly above our current level but still understandable, called 'comprehensible input' (i+1). The brain picks up grammar and vocabulary naturally from this meaningful input. The phrase 'comprehensible input' is the dead giveaway for Krashen's Input Hypothesis.
Tip: 'Comprehensible input' = Krashen's Input Hypothesis (i+1).
Why the other choices are wrong
- B. Chomsky's UG is about innate grammar, not input level.
- C. Skinner's behaviorism focuses on stimulus-response and reinforcement.
- D. Vygotsky's sociocultural theory centers on social interaction and ZPD, not comprehensible input.
Sample 2
Which linguistic theory, proposed by Noam Chomsky, suggests that humans possess an innate 'Language Acquisition Device'?
- A Behaviorism
- B Constructivism
- C Nativism✓
- D Functionalism
Answer: C
Noam Chomsky's Nativism (or Innateness Hypothesis) argues that humans are born with an innate capacity for language—a Language Acquisition Device (LAD) hardwired into the brain. This explains why children acquire complex grammar rules despite limited, messy input and why all healthy children across cultures reach similar milestones. Chomsky's theory challenged Behaviorism by showing that imitation and reinforcement alone can't explain how a three-year-old produces sentences she's never heard before. While neuroscience hasn't found a physical LAD, Nativism remains influential in linguistics. For language teachers, this theory suggests that student errors are part of natural development, not just bad habits, and that explicit grammar instruction works better than pure immersion.
Why the other choices are wrong
- A. Behaviorism attributes language to conditioning and imitation, the opposite of innate ability.
- B. Constructivism emphasizes active learning and knowledge-building, not biological innateness.
- D. Functionalism focuses on language as a tool for communication, not on its biological underpinnings.
Sample 3
Which linguistic theory emphasizes the importance of social interaction and the 'Zone of Proximal Development' in language learning?
- A Vygotsky’s Sociocultural Theory✓
- B Skinner’s Behaviorism
- C Krashen’s Monitor Model
- D Chomsky’s Innateness Hypothesis
Answer: A
Lev Vygotsky's Sociocultural Theory says learning happens through interaction with other people — not just inside one head. The Zone of Proximal Development (ZPD) is the gap between what a child can do alone and what they can do with help from a more experienced peer or teacher. In an English classroom: a student might struggle to write an essay alone but succeed when a teacher asks guiding questions, a classmate gives feedback, or they study a model essay first. That help is called scaffolding — temporary support that gets removed as the learner becomes able to do the task on their own.
Why the other choices are wrong
- B. Skinner's behaviorism focuses on external reinforcement, not on social interaction and scaffolding.
- C. Krashen's Monitor Model addresses input, acquisition, and monitoring—not the ZPD or social mediation.
- D. Chomsky's Innateness Hypothesis is about innate grammar, not about social learning or the zone of proximal development.
