A student argues: 'Formal linguistics can't capture real language — actual speech is full of hesitations, errors, and shortcuts that no formal rule could cover.' Which concept directly addresses this objection?
AThe student is correct — formal linguistics is purely theoretical and makes no claims about actual language use
BThe distinction between competence and performance: formal linguistics targets the abstract knowledge (competence), not the details of actual use (performance)
CFormal rules do cover real speech — errors are treated as noise that the model discounts statistically
DThe student is partially right: formal phonology is impractical, but formal syntax successfully models real speech
The competence/performance distinction is the field's answer to exactly this objection. Formal linguistics targets competence — the abstract, implicit knowledge every fluent speaker has about their language: which sentences are grammatical, how sounds can combine, what sentences mean. Performance is how language is actually produced in real time, with all its messiness. The objection confuses the two targets. Formal linguistics is not claiming to model hesitations and slips — it is trying to model the underlying knowledge system that makes language possible.
Question 2 Multiple Choice
What distinguishes formal linguistics from traditional descriptive grammar?
AFormal linguistics studies only written language; descriptive grammar covers spoken and written language equally
CFormal linguistics aims to specify a finite system of rules that generates all and only grammatical sentences; descriptive grammar catalogs patterns without this generative ambition
DFormal linguistics is prescriptive about correct usage; descriptive grammar accepts all dialects and varieties
The key distinction is the generative ambition. A descriptive grammar says 'here is what we observe about English sentences.' A formal grammar says 'here is a finite system of rules that can, in principle, produce all and only the grammatical sentences of the language.' The second goal is far more ambitious — and testable. A formal grammar over-generates if it produces ungrammatical sentences; it under-generates if it blocks grammatical ones. This precision is what makes formal linguistics a science rather than a catalog.
Question 3 True / False
Formal linguistics is primarily a tool for analyzing syntax and does not extend to phonology, semantics, or pragmatics.
TTrue
FFalse
Answer: False
This is one of the most common misconceptions about the field. Formal linguistics applies across all linguistic levels: phonology uses rule systems and constraint rankings (Optimality Theory) to model which sound sequences are permitted; semantics uses predicate logic and possible-worlds models to represent meaning and entailment; pragmatics uses game theory and probability to model context-dependent interpretation. Syntax is often the most prominent subfield, but the formalization project extends to the entire structure of language.
Question 4 True / False
The goal of a formal grammar is not to list every sentence of a language, but to specify a finite set of rules that can in principle generate all and only the grammatical sentences.
TTrue
FFalse
Answer: True
This generative goal is what makes formal linguistics tractable and powerful. No finite list could enumerate all grammatical sentences — there are infinitely many (you can always make a sentence longer). But a finite set of recursive rules can generate all of them. This insight, central to Chomsky's generative linguistics, is what connects formal linguistics to mathematics and computation: a grammar is a finite specification of an infinite set.
Question 5 Short Answer
What is the distinction between 'competence' and 'performance' in formal linguistics, and why is it important for defining the field's goals?
Think about your answer, then reveal below.
Model answer: Competence is the abstract knowledge of a language — the grammar implicitly stored in a speaker's mind that determines which sentences are grammatical and what they mean. Performance is how language is actually used in real time, including hesitations, errors, memory limits, and shortcuts. Formal linguistics targets competence: it tries to write down the rules that constitute linguistic knowledge, not the messy details of actual use. The distinction is important because it defines what counts as data (grammaticality judgments about what speakers know) versus noise (processing failures that don't reflect knowledge).
Without the competence/performance distinction, the field would be overwhelmed by the complexity of actual language use and could never produce testable formal systems. By targeting competence, formal linguistics can make precise claims: 'this sentence is grammatical' or 'this sentence violates constraint X.' These claims can be tested against native speaker intuitions — the primary data source for the field. The distinction is also what allows formal linguistics to connect to theories of language acquisition: children are acquiring competence, not just imitating performance.