→ See also: Usage-Based SLA · Usage-Based Grammar
Usage-based theory is a broad framework in linguistics and SLA holding that language structure emerges from language use. Rather than positing an innate Universal Grammar, usage-based approaches argue that learners extract patterns from the input they encounter, with frequency and regularity of exposure driving the abstraction of grammatical categories and rules.
Key tenets:
- Language is learned from input — grammatical knowledge is abstracted from experienced instances of language use, not from pre-specified rules
- Frequency matters — the more often a pattern is encountered, the more strongly it is entrenched in the learner’s system
- Constructions are the basic unit — construction grammar treats form-meaning pairings at all levels (morpheme to discourse) as the building blocks of language
- No sharp grammar/lexicon divide — grammar and vocabulary exist on a continuum
The framework draws on cognitive linguistics, connectionism, and emergentism. Influential researchers include Joan Bybee, Michael Tomasello, Adele Goldberg, and Nick Ellis.
For SLA-specific applications, see Usage-Based SLA. For the grammatical framework, see Usage-Based Grammar.